diff --git a/modules/libpref/init/all.js b/modules/libpref/init/all.js
index a9efe0523f49..0377392b7900 100644
--- a/modules/libpref/init/all.js
+++ b/modules/libpref/init/all.js
@@ -3096,10 +3096,21 @@ pref("dom.ipc.plugins.unloadTimeoutSecs", 30);
 // Asynchronous plugin initialization is on hold.
 pref("dom.ipc.plugins.asyncInit.enabled", false);
 
-// Use flash async drawing mode
+#ifdef RELEASE_OR_BETA
+#ifdef _AMD64_
+// Allow Flash async drawing mode in 64-bit release builds
 pref("dom.ipc.plugins.asyncdrawing.enabled", true);
-// Force the accelerated path for a subset of Flash wmode values
+// Force the accelerated direct path for a subset of Flash wmode values
 pref("dom.ipc.plugins.forcedirect.enabled", true);
+#else
+// Disable async drawing for 32-bit release builds
+pref("dom.ipc.plugins.asyncdrawing.enabled", false);
+#endif // _AMD64_
+#else
+// Enable in dev channels
+pref("dom.ipc.plugins.asyncdrawing.enabled", true);
+pref("dom.ipc.plugins.forcedirect.enabled", true);
+#endif
 
 #ifdef RELEASE_OR_BETA
 pref("dom.ipc.processCount", 1);