diff --git a/packages/display/src/displays/webgl/program/Heatmap.ts b/packages/display/src/displays/webgl/program/Heatmap.ts
index abcddeeb9..b08676749 100644
--- a/packages/display/src/displays/webgl/program/Heatmap.ts
+++ b/packages/display/src/displays/webgl/program/Heatmap.ts
@@ -56,8 +56,7 @@ class HeatmapProgram extends Program {
         this.vertexShaderSrc = vertexShader;
         this.fragmentShaderSrc = fragmentShader;
 
-        const offscreenScale = 1;
-        // const offscreenScale = 1 / 4;
+        const offscreenScale = 1 / 2;
         let {width, height} = gl.canvas;
         width *= offscreenScale;
         height *= offscreenScale;