diff --git a/src/browser/app/profile/zen-browser.js b/src/browser/app/profile/zen-browser.js
index a61533e60..c13375eb1 100644
--- a/src/browser/app/profile/zen-browser.js
+++ b/src/browser/app/profile/zen-browser.js
@@ -425,7 +425,7 @@ pref("browser.aboutwelcome.enabled", false);
 
 // ---- Experimental settings to try make zen faster
 pref("gfx.canvas.accelerated.cache-items", 32768);
-pref("gfx.canvas.accelerated.cache-size", 4096);
+pref("gfx.canvas.accelerated.cache-size", 256);
 pref("gfx.content.skia-font-cache-size", 80);
 
 pref("media.memory_cache_max_size", 1048576);