diff --git a/android/src/mindustry/android/AndroidLauncher.java b/android/src/mindustry/android/AndroidLauncher.java
index 9dde93dd18..da3944fe06 100644
--- a/android/src/mindustry/android/AndroidLauncher.java
+++ b/android/src/mindustry/android/AndroidLauncher.java
@@ -180,7 +180,6 @@ public class AndroidLauncher extends AndroidApplication{
         }, new AndroidApplicationConfiguration(){{
             useImmersiveMode = true;
             hideStatusBar = true;
-            useGL30 = true;
         }});
         checkFiles(getIntent());
 
diff --git a/core/src/mindustry/type/UnitType.java b/core/src/mindustry/type/UnitType.java
index ac95dbb362..3777239266 100644
--- a/core/src/mindustry/type/UnitType.java
+++ b/core/src/mindustry/type/UnitType.java
@@ -1496,6 +1496,17 @@ public class UnitType extends UnlockableContent{
             Tmp.v1.set(x, y).rotate(rot);
             float ex = Tmp.v1.x, ey = Tmp.v1.y;
 
+            //engine outlines (cursed?)
+            /*float z = Draw.z();
+            Draw.z(z - 0.0001f);
+            Draw.color(type.outlineColor);
+            Fill.circle(
+            unit.x + ex,
+            unit.y + ey,
+            (type.outlineRadius * Draw.scl + radius + Mathf.absin(Time.time, 2f, radius / 4f)) * scale
+            );
+            Draw.z(z);*/
+
             Draw.color(color);
             Fill.circle(
             unit.x + ex,
diff --git a/core/src/mindustry/world/draw/DrawTurret.java b/core/src/mindustry/world/draw/DrawTurret.java
index 6679790935..7289441c2e 100644
--- a/core/src/mindustry/world/draw/DrawTurret.java
+++ b/core/src/mindustry/world/draw/DrawTurret.java
@@ -36,11 +36,9 @@ public class DrawTurret extends DrawBlock{
         for(var part : parts){
             part.getOutlines(out);
         }
-        if(preview.found()){
-            out.add(preview);
-            if(block.region.found()){
-                out.add(block.region);
-            }
+
+        if(block.region.found() && !Core.atlas.has(block.name + "-preview")){
+            out.add(block.region);
         }
     }
 
@@ -124,7 +122,6 @@ public class DrawTurret extends DrawBlock{
     /** @return the generated icons to be used for this block. */
     @Override
     public TextureRegion[] icons(Block block){
-        TextureRegion showTop = preview.found() ? preview : block.region;
-        return top.found() ? new TextureRegion[]{base, showTop, top} : new TextureRegion[]{base, showTop};
+        return top.found() ? new TextureRegion[]{base, preview, top} : new TextureRegion[]{base, preview};
     }
 }
diff --git a/desktop/src/mindustry/desktop/DesktopLauncher.java b/desktop/src/mindustry/desktop/DesktopLauncher.java
index d91d4241a4..ceabbae8a7 100644
--- a/desktop/src/mindustry/desktop/DesktopLauncher.java
+++ b/desktop/src/mindustry/desktop/DesktopLauncher.java
@@ -41,8 +41,10 @@ public class DesktopLauncher extends ClientLauncher{
                 maximized = true;
                 width = 900;
                 height = 700;
-                //gl30 now default, disable with argument.
-                gl30 = !Structs.contains(arg, "-gl2");
+                //enable gl3 with command-line argument (slower performance, apparently)
+                if(Structs.contains(arg, "-gl3")){
+                    gl30 = true;
+                }
                 if(Structs.contains(arg, "-antialias")){
                     samples = 16;
                 }
diff --git a/ios/src/mindustry/ios/IOSLauncher.java b/ios/src/mindustry/ios/IOSLauncher.java
index 30c8211954..fa12ea0e48 100644
--- a/ios/src/mindustry/ios/IOSLauncher.java
+++ b/ios/src/mindustry/ios/IOSLauncher.java
@@ -177,9 +177,7 @@ public class IOSLauncher extends IOSApplication.Delegate{
                 forced = false;
                 UINavigationController.attemptRotationToDeviceOrientation();
             }
-        }, new IOSApplicationConfiguration(){{
-            useGL30 = true;
-        }});
+        }, new IOSApplicationConfiguration());
     }
 
     @Override