146.0 (#447)

Fastfox.js

@@ -3,7 +3,7 @@
  * Fastfox                                                                              *
  * "Non ducor duco"                                                                     *
  * priority: speedy browsing                                                            *
- * version: 144                                                                         *
+ * version: 146                                                                         *
  * url: https://github.com/yokoffing/Betterfox                                          *
  ***************************************************************************************/
 
@@ -56,7 +56,6 @@ user_pref("gfx.content.skia-font-cache-size", 32); // 32 MB; default=5; Chrome=2
 //user_pref("content.notify.interval", 100000); // (.10s); default=120000 (.12s)
 //user_pref("content.max.tokenizing.time", 1000000); // (1.00s); alt=2000000; HIDDEN
 //user_pref("content.interrupt.parsing", true); // HIDDEN
-//user_pref("content.notify.ontimer", true); // DEFAULT
 
 // PREF: UI responsiveness threshold
 //user_pref("content.switch.threshold", 300000); // HIDDEN; default= 750000; alt=500000
@@ -118,6 +117,15 @@ user_pref("gfx.content.skia-font-cache-size", 32); // 32 MB; default=5; Chrome=2
 //user_pref("gfx.webrender.compositor", true); // DEFAULT WINDOWS macOS
     //user_pref("gfx.webrender.compositor.force-enabled", true); // enforce
 
+// PREF: Webrender layer compositor
+// [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1945683
+// [2] https://www.reddit.com/r/firefox/comments/1p58qre/firefox_is_getting_ready_to_make_youtube_fast/
+// [3] https://www.ghacks.net/2025/11/24/these-two-tweaks-should-improve-firefoxs-performance-on-youtube-significantly/
+user_pref("gfx.webrender.layer-compositor", true);
+    // If your PC uses an AMD GPU, you might want to make a second change.
+    // This one improves CPU usage on AMD systems.
+    //user_pref("media.wmf.zero-copy-nv12-textures-force-enabled", true);
+
 // PREF: if your hardware doesn't support Webrender, you can fallback to Webrender's software renderer
 // [1] https://www.ghacks.net/2020/12/14/how-to-find-out-if-webrender-is-enabled-in-firefox-and-how-to-enable-it-if-it-is-not/
 //user_pref("gfx.webrender.software", true); // Software Webrender uses CPU instead of GPU
@@ -544,11 +552,11 @@ user_pref("network.prefetch-next", false);
 // [2] https://www.ghacks.net/2014/05/11/seer-disable-firefox/
 // [3] https://github.com/dillbyrne/random-agent-spoofer/issues/238#issuecomment-110214518
 // [4] https://www.igvita.com/posa/high-performance-networking-in-google-chrome/#predictor
-user_pref("network.predictor.enabled", false);
+//user_pref("network.predictor.enabled", false); // [DEFAULT: false FF144+]
 
 // PREF: Network Predictor fetch for resources ahead of time
 // Prefetch page resources based on past user behavior.
-//user_pref("network.predictor.enable-prefetch", false); // DEFAULT
+//user_pref("network.predictor.enable-prefetch", false); // [FF48+] [DEFAULT: false]
 
 // PREF: make Network Predictor active when hovering over links
 // When hovering over links, Network Predictor uses past resource history to