diff --git a/src/drawables/drawable-descriptor.ts b/src/drawables/drawable-descriptor.ts
index 6d4a9c8..058d884 100644
--- a/src/drawables/drawable-descriptor.ts
+++ b/src/drawables/drawable-descriptor.ts
@@ -52,6 +52,8 @@ export interface DrawableDescriptor {
    *
    * For each step, a shader will be generated. And at runtime the closes matching
    * shader will be used to render a given part of the scene.
+   *
+   * Must contain 0 as a value.
    */
   shaderCombinationSteps: Array<number>;
 
diff --git a/src/drawables/drawable.ts b/src/drawables/drawable.ts
index 2ebaa7a..137c4fb 100644
--- a/src/drawables/drawable.ts
+++ b/src/drawables/drawable.ts
@@ -33,6 +33,7 @@ export abstract class Drawable {
    */
   protected abstract getObjectToSerialize(transform2d: mat2d, transform1d: number): any;
 
+  /** @internal */
   public serializeToUniforms(
     uniforms: any,
     transform2d: mat2d,
diff --git a/src/graphics/graphics-library/program/uniform-array-autoscaling-program.ts b/src/graphics/graphics-library/program/uniform-array-autoscaling-program.ts
index 0ba43c8..e5063a9 100644
--- a/src/graphics/graphics-library/program/uniform-array-autoscaling-program.ts
+++ b/src/graphics/graphics-library/program/uniform-array-autoscaling-program.ts
@@ -31,6 +31,8 @@ export class UniformArrayAutoScalingProgram implements IProgram {
 
     const promises: Array<Promise<void>> = [];
 
+    this.checkDescriptorValidity(descriptors);
+
     for (const combination of getCombinations(
       descriptors.map((o) => o.shaderCombinationSteps)
     )) {
@@ -48,6 +50,19 @@ export class UniformArrayAutoScalingProgram implements IProgram {
     await Promise.all(promises);
   }
 
+  private checkDescriptorValidity(descriptors: Array<DrawableDescriptor>) {
+    const descriptorsWithoutZero = descriptors.filter(
+      (d) => !d.shaderCombinationSteps.includes(0)
+    );
+    if (descriptorsWithoutZero.length > 0) {
+      throw new Error(
+        `Descriptors must contain a '0' step. Count macros for the offending descriptors: ${descriptorsWithoutZero.map(
+          (d) => d.uniformCountMacroName
+        )}`
+      );
+    }
+  }
+
   public setDrawingRectangleUV(bottomLeft: vec2, size: vec2) {
     this.drawingRectangleBottomLeft = bottomLeft;
     this.drawingRectangleSize = size;
diff --git a/src/graphics/rendering/settings/default-runtime-settings.ts b/src/graphics/rendering/settings/default-runtime-settings.ts
index beb612d..06bdb8e 100644
--- a/src/graphics/rendering/settings/default-runtime-settings.ts
+++ b/src/graphics/rendering/settings/default-runtime-settings.ts
@@ -5,7 +5,7 @@ import { RuntimeSettings } from './runtime-settings';
  * Contains the default values used for [[RuntimeSettings]].
  */
 export const defaultRuntimeSettings: RuntimeSettings = {
-  enableHighDpiRendering: true,
+  enableHighDpiRendering: false,
   tileMultiplier: 8,
   isWorldInverted: false,
   lightCutoffDistance: 400,
diff --git a/src/graphics/rendering/settings/default-startup-settings.ts b/src/graphics/rendering/settings/default-startup-settings.ts
index d9e2aeb..1192309 100644
--- a/src/graphics/rendering/settings/default-startup-settings.ts
+++ b/src/graphics/rendering/settings/default-startup-settings.ts
@@ -7,5 +7,5 @@ export const defaultStartupSettings: StartupSettings = {
   shadowTraceCount: 16,
   paletteSize: 256,
   ignoreWebGL2: false,
-  enableStopwatch: true,
+  enableStopwatch: false,
 };