diff --git a/common/ColorScale.h b/common/ColorScale.h
index 3fab2ff4..81a7d2e7 100644
--- a/common/ColorScale.h
+++ b/common/ColorScale.h
@@ -76,7 +76,7 @@ class ColorScale {
 
     static rgb Apply(float input, const std::vector<rgb> &map);
 
-    static constexpr size_t kLutSize = 4096;
+    static constexpr size_t kLutSize = 512;
     mutable std::vector<rgb> lut_;
 
     void CalcLUT() const;