--- a/browser/app/profile/firefox.js
+++ b/browser/app/profile/firefox.js
@@ -1532,21 +1532,17 @@ pref("browser.tabs.remote.desktopbehavio
 #if !defined(XP_MACOSX) || defined(NIGHTLY_BUILD)
 pref("browser.tabs.remote.warmup.enabled", true);
 #else
 pref("browser.tabs.remote.warmup.enabled", false);
 #endif
 
 // Caches tab layers to improve perceived performance
 // of tab switches.
-#if defined(NIGHTLY_BUILD)
-pref("browser.tabs.remote.tabCacheSize", 5);
-#else
 pref("browser.tabs.remote.tabCacheSize", 0);
-#endif
 
 pref("browser.tabs.remote.warmup.maxTabs", 3);
 pref("browser.tabs.remote.warmup.unloadDelayMs", 2000);
 
 // For the about:tabcrashed page
 pref("browser.tabs.crashReporting.sendReport", true);
 pref("browser.tabs.crashReporting.includeURL", false);
 pref("browser.tabs.crashReporting.requestEmail", false);