diff --git a/core/assets/bundles/bundle.properties b/core/assets/bundles/bundle.properties
index 279bbb7bbd..a0aea04348 100644
--- a/core/assets/bundles/bundle.properties
+++ b/core/assets/bundles/bundle.properties
@@ -2326,7 +2326,7 @@ lst.setprop = Sets a property of a unit or building.
 lst.effect = Create a particle effect.
 lst.sync = Sync a variable across the network.\nLimited to 20 times a second per variable.
 lst.makemarker = Create a new logic marker in the world.\nAn ID to identify this marker must be provided.\nMarkers currently limited to 20,000 per world.
-lst.setmarker = Set a property for a marker.\nThe ID used must be the same as in the Make Marker instruction.\n[accent]null []values are being ignored instead of converting to 0.
+lst.setmarker = Set a property for a marker.\nThe ID used must be the same as in the Make Marker instruction.\n[accent]null []values are ignored.
 lst.localeprint = Add map locale property value to the text buffer.\nTo set map locale bundles in map editor, check [accent]Map Info > Locale Bundles[].\nIf client is a mobile device, tries to print a property ending in ".mobile" first.
 
 logic.nounitbuild = [red]Unit building logic is not allowed here.
diff --git a/core/src/mindustry/core/GameState.java b/core/src/mindustry/core/GameState.java
index 5d9ee3515e..7c89abe05d 100644
--- a/core/src/mindustry/core/GameState.java
+++ b/core/src/mindustry/core/GameState.java
@@ -1,11 +1,9 @@
 package mindustry.core;
 
 import arc.*;
-import arc.struct.*;
 import arc.util.*;
 import mindustry.game.EventType.*;
 import mindustry.game.*;
-import mindustry.game.MapObjectives.*;
 import mindustry.gen.*;
 import mindustry.maps.*;
 import mindustry.type.*;
@@ -35,7 +33,7 @@ public class GameState{
     /** Statistics for this save/game. Displayed after game over. */
     public GameStats stats = new GameStats();
     /** Markers not linked to objectives. Controlled by world processors. */
-    public IntMap<ObjectiveMarker> markers = new IntMap<>();
+    public MapMarkers markers = new MapMarkers();
     /** Locale-specific string bundles of current map */
     public MapLocales mapLocales = new MapLocales();
     /** Global attributes of the environment, calculated by weather. */
diff --git a/core/src/mindustry/core/Renderer.java b/core/src/mindustry/core/Renderer.java
index a7fe83e6c2..13b1ead08f 100644
--- a/core/src/mindustry/core/Renderer.java
+++ b/core/src/mindustry/core/Renderer.java
@@ -375,13 +375,15 @@ public class Renderer implements ApplicationListener{
         //draw objective markers
         state.rules.objectives.eachRunning(obj -> {
             for(var marker : obj.markers){
-                if(!marker.minimap) marker.drawWorld();
+                if(!marker.minimap){
+                    marker.drawWorld();
+                }
             }
         });
 
-        for(var marker : state.markers.values()){
-            if(marker != null){
-                if(!marker.isHidden() && !marker.minimap) marker.drawWorld();
+        for(var marker : state.markers){
+            if(!marker.isHidden() && !marker.minimap){
+                marker.drawWorld();
             }
         }
 
diff --git a/core/src/mindustry/game/MapMarkers.java b/core/src/mindustry/game/MapMarkers.java
new file mode 100644
index 0000000000..3afb6895ee
--- /dev/null
+++ b/core/src/mindustry/game/MapMarkers.java
@@ -0,0 +1,72 @@
+package mindustry.game;
+
+import arc.struct.*;
+import arc.util.*;
+import mindustry.game.MapObjectives.*;
+import mindustry.io.*;
+
+import java.io.*;
+import java.util.*;
+
+public class MapMarkers implements Iterable<ObjectiveMarker>{
+    /** Maps marker unique ID to marker. */
+    private IntMap<ObjectiveMarker> map = new IntMap<>();
+    /** Sequential list of markers. This allows for faster iteration than a map. */
+    private Seq<ObjectiveMarker> all = new Seq<>(false);
+
+    public void add(int id, ObjectiveMarker marker){
+        if(marker == null) return;
+
+        var prev = map.put(id, marker);
+        if(prev != null){
+            all.set(prev.arrayIndex, marker);
+        }else{
+            all.add(marker);
+            marker.arrayIndex = all.size - 1;
+        }
+    }
+
+    public void remove(int id){
+        var prev = map.remove(id);
+        if(prev != null){
+            if(all.size > prev.arrayIndex + 1){ //there needs to be something above the index to replace it with
+                all.remove(prev.arrayIndex);
+                //update its index
+                all.get(prev.arrayIndex).arrayIndex = prev.arrayIndex;
+            }else{
+                //no sense updating the index of the replaced element when it was not replaced
+                all.remove(prev.arrayIndex);
+            }
+        }
+    }
+
+    public @Nullable ObjectiveMarker get(int id){
+        return map.get(id);
+    }
+
+    public boolean has(int id){
+        return get(id) != null;
+    }
+
+    public int size(){
+        return all.size;
+    }
+
+    public void write(DataOutput stream) throws IOException{
+        JsonIO.writeBytes(map, ObjectiveMarker.class, (DataOutputStream)stream);
+    }
+
+    public void read(DataInput stream) throws IOException{
+        all.clear();
+        map = JsonIO.readBytes(IntMap.class, ObjectiveMarker.class, (DataInputStream)stream);
+        for(var entry : map.entries()){
+            all.add(entry.value);
+            entry.value.arrayIndex = all.size - 1;
+        }
+    }
+
+    @Override
+    public Iterator<ObjectiveMarker> iterator(){
+        return all.iterator();
+    }
+}
diff --git a/core/src/mindustry/game/MapObjectives.java b/core/src/mindustry/game/MapObjectives.java
index ee617ac49e..879ba2ad94 100644
--- a/core/src/mindustry/game/MapObjectives.java
+++ b/core/src/mindustry/game/MapObjectives.java
@@ -627,10 +627,11 @@ public class MapObjectives implements Iterable<MapObjective>, Eachable<MapObject
 
     /** Marker used for drawing various content to indicate something along with an objective. Mostly used as UI overlay.  */
     public static abstract class ObjectiveMarker{
-        /** Position of marker, in world coordinates */
-        public @TilePos Vec2 pos = new Vec2();
         /** Makes sure markers are only added once. */
         public transient boolean wasAdded;
+        /** Internal use only! Do not access. */
+        public transient int arrayIndex;
+
         /** Whether to display marker on minimap instead of world. {@link MinimapMarker} ignores this value. */
         public boolean minimap = false;
         /** Whether to scale marker corresponding to player's zoom level. {@link MinimapMarker} ignores this value. */
@@ -639,28 +640,31 @@ public class MapObjectives implements Iterable<MapObjective>, Eachable<MapObject
         protected boolean hidden = false;
         /** On which z-sorting layer is marker drawn. */
         protected float drawLayer = Layer.overlayUI;
+
         /** Draws the marker. Actual marker position and scale are calculated in {@link #drawWorld()} and {@link #drawMinimap(MinimapRenderer)}. */
         public void baseDraw(float x, float y, float scaleFactor){}
+
         /** Called in the main renderer. */
-        public void drawWorld(){
-            baseDraw(pos.x, pos.y, autoscale ? 4f / renderer.getDisplayScale() : 1f);
-        }
+        public void drawWorld(){}
+
         /** Called in the small and large map. */
-        public void drawMinimap(MinimapRenderer minimap){
-            minimap.transform(Tmp.v1.set(pos.x + 4f, pos.y + 4f));
-            baseDraw(Tmp.v1.x, Tmp.v1.y, minimap.getScaleFactor(autoscale));
-        }
+        public void drawMinimap(MinimapRenderer minimap){}
+
         /** Add any UI elements necessary. */
         public void added(){}
+
         /** Remove any UI elements, if necessary. */
         public void removed(){}
+
         /** Whether the marker is hidden */
         public boolean isHidden(){
             return hidden;
         }
+
         /** Control marker with world processor code. Ignores NaN (null) values. */
         public void control(LMarkerControl type, double p1, double p2, double p3){
             if(Double.isNaN(p1)) return;
+
             switch(type){
                 case visibility -> hidden = Mathf.equal((float)p1, 0f);
                 case drawLayer -> drawLayer = (float)p1;
@@ -668,6 +672,7 @@ public class MapObjectives implements Iterable<MapObjective>, Eachable<MapObject
                 case autoscale -> autoscale = !Mathf.equal((float)p1, 0f);
             }
         }
+
         public void setText(String text, boolean fetch){}
 
         public void setTexture(String textureName){}
@@ -699,8 +704,46 @@ public class MapObjectives implements Iterable<MapObjective>, Eachable<MapObject
         }
     }
 
+    /** A marker that has a position in the world in world coordinates. */
+    public static abstract class PosMarker extends ObjectiveMarker{
+        /** Position of marker, in world coordinates */
+        public @TilePos Vec2 pos = new Vec2();
+
+        /** Called in the main renderer. */
+        @Override
+        public void drawWorld(){
+            baseDraw(pos.x, pos.y, autoscale ? 4f / renderer.getDisplayScale() : 1f);
+        }
+
+        /** Called in the small and large map. */
+        @Override
+        public void drawMinimap(MinimapRenderer minimap){
+            minimap.transform(Tmp.v1.set(pos.x + 4f, pos.y + 4f));
+            baseDraw(Tmp.v1.x, Tmp.v1.y, minimap.getScaleFactor(autoscale));
+        }
+
+        @Override
+        public void control(LMarkerControl type, double p1, double p2, double p3){
+            if(!Double.isNaN(p1)){
+                if(type == LMarkerControl.pos){
+                    pos.x = (float)p1 * tilesize;
+                }else{
+                    super.control(type, p1, p2, p3);
+                }
+            }
+
+            if(!Double.isNaN(p2)){
+                if(type == LMarkerControl.pos){
+                    pos.y = (float)p2 * tilesize;
+                }else{
+                    super.control(type, p1, p2, p3);
+                }
+            }
+        }
+    }
+
     /** Displays text above a shape. */
-    public static class ShapeTextMarker extends ObjectiveMarker{
+    public static class ShapeTextMarker extends PosMarker{
         public @Multiline String text = "frog";
         public float fontSize = 1f, textHeight = 7f;
         public @LabelFlag byte flags = WorldLabel.flagBackground | WorldLabel.flagOutline;
@@ -743,7 +786,7 @@ public class MapObjectives implements Iterable<MapObjective>, Eachable<MapObject
         @Override
         public void baseDraw(float x, float y, float scaleFactor){
             //in case some idiot decides to make 9999999 sides and freeze the game
-            int sides = Math.min(this.sides, 200);
+            int sides = Math.min(this.sides, 300);
 
             Draw.z(drawLayer);
             Lines.stroke(3f * scaleFactor, Pal.gray);
@@ -766,7 +809,6 @@ public class MapObjectives implements Iterable<MapObjective>, Eachable<MapObject
         public void control(LMarkerControl type, double p1, double p2, double p3){
             if(!Double.isNaN(p1)){
                 switch(type){
-                    case pos -> pos.x = (float)p1 * tilesize;
                     case fontSize -> fontSize = (float)p1;
                     case textHeight -> textHeight = (float)p1;
                     case labelFlags -> {
@@ -786,7 +828,6 @@ public class MapObjectives implements Iterable<MapObjective>, Eachable<MapObject
 
             if(!Double.isNaN(p2)){
                 switch(type){
-                    case pos -> pos.y = (float)p2 * tilesize;
                     case labelFlags -> {
                         if(!Mathf.equal((float)p2, 0f)){
                             flags |= WorldLabel.flagOutline;
@@ -883,7 +924,7 @@ public class MapObjectives implements Iterable<MapObjective>, Eachable<MapObject
     }
 
     /** Displays a shape with an outline and color. */
-    public static class ShapeMarker extends ObjectiveMarker{
+    public static class ShapeMarker extends PosMarker{
         public float radius = 8f, rotation = 0f, stroke = 1f;
         public boolean fill = false, outline = true;
         public int sides = 4;
@@ -927,7 +968,6 @@ public class MapObjectives implements Iterable<MapObjective>, Eachable<MapObject
         public void control(LMarkerControl type, double p1, double p2, double p3){
             if(!Double.isNaN(p1)){
                 switch(type){
-                    case pos -> pos.x = (float)p1 * tilesize;
                     case radius -> radius = (float)p1;
                     case stroke -> stroke = (float)p1;
                     case rotation -> rotation = (float)p1;
@@ -939,7 +979,6 @@ public class MapObjectives implements Iterable<MapObjective>, Eachable<MapObject
 
             if(!Double.isNaN(p2)){
                 switch(type){
-                    case pos -> pos.y = (float)p2 * tilesize;
                     case shape -> fill = !Mathf.equal((float)p2, 0f);
                     default -> super.control(type, p1, p2, p3);
                 }
@@ -956,7 +995,7 @@ public class MapObjectives implements Iterable<MapObjective>, Eachable<MapObject
     }
 
     /** Displays text at a location. */
-    public static class TextMarker extends ObjectiveMarker{
+    public static class TextMarker extends PosMarker{
         public @Multiline String text = "uwu";
         public float fontSize = 1f;
         public @LabelFlag byte flags = WorldLabel.flagBackground | WorldLabel.flagOutline;
@@ -993,7 +1032,6 @@ public class MapObjectives implements Iterable<MapObjective>, Eachable<MapObject
         public void control(LMarkerControl type, double p1, double p2, double p3){
             if(!Double.isNaN(p1)){
                 switch(type){
-                    case pos -> pos.x = (float)p1 * tilesize;
                     case fontSize -> fontSize = (float)p1;
                     case labelFlags -> {
                         if(!Mathf.equal((float)p1, 0f)){
@@ -1008,7 +1046,6 @@ public class MapObjectives implements Iterable<MapObjective>, Eachable<MapObject
 
             if(!Double.isNaN(p2)){
                 switch(type){
-                    case pos -> pos.y = (float)p2 * tilesize;
                     case labelFlags -> {
                         if(!Mathf.equal((float)p2, 0f)){
                             flags |= WorldLabel.flagOutline;
@@ -1033,8 +1070,8 @@ public class MapObjectives implements Iterable<MapObjective>, Eachable<MapObject
     }
 
     /** Displays a line from pos1 to pos2. */
-    public static class LineMarker extends ObjectiveMarker{
-        public @TilePos Vec2 pos = new Vec2(), endPos = new Vec2();
+    public static class LineMarker extends PosMarker{
+        public @TilePos Vec2 endPos = new Vec2();
         public float stroke = 1f;
         public boolean outline = true;
         public Color color = Color.valueOf("ffd37f");
@@ -1079,7 +1116,6 @@ public class MapObjectives implements Iterable<MapObjective>, Eachable<MapObject
         public void control(LMarkerControl type, double p1, double p2, double p3){
             if(!Double.isNaN(p1)){
                 switch(type){
-                    case pos -> pos.x = (float)p1 * tilesize;
                     case endPos -> endPos.x = (float)p1 * tilesize;
                     case stroke -> stroke = (float)p1;
                     case color -> color.set(Tmp.c1.fromDouble(p1));
@@ -1089,7 +1125,6 @@ public class MapObjectives implements Iterable<MapObjective>, Eachable<MapObject
 
             if(!Double.isNaN(p2)){
                 switch(type){
-                    case pos -> pos.y = (float)p2 * tilesize;
                     case endPos -> endPos.y = (float)p2 * tilesize;
                     default -> super.control(type, p1, p2, p3);
                 }
@@ -1098,7 +1133,7 @@ public class MapObjectives implements Iterable<MapObjective>, Eachable<MapObject
     }
 
     /** Displays a texture with specified name. */
-    public static class TextureMarker extends ObjectiveMarker{
+    public static class TextureMarker extends PosMarker{
         public float rotation = 0f, width = 0f, height = 0f; // Zero width/height scales marker to original texture's size
         public String textureName = "";
         public Color color = Color.white.cpy();
@@ -1123,7 +1158,6 @@ public class MapObjectives implements Iterable<MapObjective>, Eachable<MapObject
         public void control(LMarkerControl type, double p1, double p2, double p3){
             if(!Double.isNaN(p1)){
                 switch(type){
-                    case pos -> pos.x = (float)p1 * tilesize;
                     case rotation -> rotation = (float)p1;
                     case textureSize -> width = (float)p1 * tilesize;
                     case color -> color.set(Tmp.c1.fromDouble(p1));
@@ -1133,7 +1167,6 @@ public class MapObjectives implements Iterable<MapObjective>, Eachable<MapObject
 
             if(!Double.isNaN(p2)){
                 switch(type){
-                    case pos -> pos.y = (float)p2 * tilesize;
                     case textureSize -> height = (float)p2 * tilesize;
                     default -> super.control(type, p1, p2, p3);
                 }
diff --git a/core/src/mindustry/graphics/MinimapRenderer.java b/core/src/mindustry/graphics/MinimapRenderer.java
index 12694b2b8a..62df0d9c9c 100644
--- a/core/src/mindustry/graphics/MinimapRenderer.java
+++ b/core/src/mindustry/graphics/MinimapRenderer.java
@@ -255,13 +255,15 @@ public class MinimapRenderer{
 
         state.rules.objectives.eachRunning(obj -> {
             for(var marker : obj.markers){
-                if(marker.minimap) marker.drawMinimap(this);
+                if(marker.minimap){
+                    marker.drawMinimap(this);
+                }
             }
         });
 
-        for(var marker : state.markers.values()){
-            if(marker != null){
-                if(!marker.isHidden() && marker.minimap) marker.drawMinimap(this);
+        for(var marker : state.markers){
+            if(!marker.isHidden() && marker.minimap){
+                marker.drawMinimap(this);
             }
         }
     }
diff --git a/core/src/mindustry/graphics/Shaders.java b/core/src/mindustry/graphics/Shaders.java
index 263514a706..eb1aa22a4e 100644
--- a/core/src/mindustry/graphics/Shaders.java
+++ b/core/src/mindustry/graphics/Shaders.java
@@ -242,10 +242,17 @@ public class Shaders{
         @Override
         public void apply(){
             setUniformf("u_progress", progress);
-            setUniformf("u_uv", region.u, region.v);
-            setUniformf("u_uv2", region.u2, region.v2);
             setUniformf("u_time", time);
-            setUniformf("u_texsize", region.texture.width, region.texture.height);
+
+            if(region.texture == null){
+                setUniformf("u_uv", 0f, 0f);
+                setUniformf("u_uv2", 1f, 1f);
+                setUniformf("u_texsize", 1, 1);
+            }else{
+                setUniformf("u_uv", region.u, region.v);
+                setUniformf("u_uv2", region.u2, region.v2);
+                setUniformf("u_texsize", region.texture.width, region.texture.height);
+            }
         }
     }
 
diff --git a/core/src/mindustry/io/SaveVersion.java b/core/src/mindustry/io/SaveVersion.java
index e45d510893..ca7a5f4c9e 100644
--- a/core/src/mindustry/io/SaveVersion.java
+++ b/core/src/mindustry/io/SaveVersion.java
@@ -6,14 +6,12 @@ import arc.math.geom.*;
 import arc.struct.*;
 import arc.util.*;
 import arc.util.io.*;
-import mindustry.*;
 import mindustry.content.*;
 import mindustry.content.TechTree.*;
 import mindustry.core.*;
 import mindustry.ctype.*;
 import mindustry.entities.*;
 import mindustry.game.*;
-import mindustry.game.MapObjectives.*;
 import mindustry.game.Teams.*;
 import mindustry.gen.*;
 import mindustry.maps.Map;
@@ -403,11 +401,11 @@ public abstract class SaveVersion extends SaveFileReader{
     }
 
     public void writeMarkers(DataOutput stream) throws IOException{
-        JsonIO.writeBytes(Vars.state.markers, ObjectiveMarker.class, (DataOutputStream)stream);
+        state.markers.write(stream);
     }
 
     public void readMarkers(DataInput stream) throws IOException{
-        Vars.state.markers = JsonIO.readBytes(IntMap.class, ObjectiveMarker.class, (DataInputStream)stream);
+        state.markers.read(stream);
     }
 
     public void readTeamBlocks(DataInput stream) throws IOException{
diff --git a/core/src/mindustry/logic/LExecutor.java b/core/src/mindustry/logic/LExecutor.java
index b32faa78aa..b152bd1e5d 100644
--- a/core/src/mindustry/logic/LExecutor.java
+++ b/core/src/mindustry/logic/LExecutor.java
@@ -2033,12 +2033,12 @@ public class LExecutor{
         public void run(LExecutor exec){
             var cons = MapObjectives.markerNameToType.get(type);
 
-            if(cons != null && state.markers.size < maxMarkers){
+            if(cons != null && state.markers.size() < maxMarkers){
                 int mid = exec.numi(id);
-                if(exec.bool(replace) || !state.markers.containsKey(mid)){
+                if(exec.bool(replace) || !state.markers.has(mid)){
                     var marker = cons.get();
                     marker.control(LMarkerControl.pos, exec.num(x), exec.num(y), 0);
-                    state.markers.put(mid, marker);
+                    state.markers.add(mid, marker);
                 }
             }
         }
@@ -2046,7 +2046,7 @@ public class LExecutor{
 
     @Remote(called = Loc.server, variants = Variant.both, unreliable = true)
     public static void createMarker(int id, ObjectiveMarker marker){
-        state.markers.put(id, marker);
+        state.markers.add(id, marker);
     }
 
     @Remote(called = Loc.server, variants = Variant.both, unreliable = true)