diff --git a/home-manager/firefox/config/speed.nix b/home-manager/firefox/config/speed.nix
new file mode 100644
index 0000000..cdee0fb
--- /dev/null
+++ b/home-manager/firefox/config/speed.nix
@@ -0,0 +1,28 @@
+{
+  # https://github.com/yokoffing/Betterfox
+  "content.notify.interval" = 100000;
+  "gfx.canvas.accelerated.cache-items" = 4096;
+  "gfx.canvas.accelerated.cache-size" = 512;
+  "gfx.content.skia-font-cache-size" = 20;
+  "browser.cache.jsbc_compression_level" = 3;
+  "media.memory_cache_max_size" = 65536;
+  "media.cache_readahead_limit" = 7200;
+  "media.cache_resume_threshold" = 3600;
+  "image.mem.decode_bytes_at_a_time" = 32768;
+  "network.http.max-connections" = 1800;
+  "network.http.max-persistent-connections-per-server" = 10;
+  "network.http.max-urgent-start-excessive-connections-per-host" = 5;
+  "network.http.pacing.requests.enabled" = false;
+  "network.dnsCacheExpiration" = 3600;
+  "network.ssl_tokens_cache_capacity" = 10240;
+  # Disable Link Prefetching
+  # Firefox prefetches the next site on some links, so the site is loaded even when
+  # you never click.
+  "network.dns.disablePrefetch" = true;
+  "network.dns.disablePrefetchFromHTTPS" = true;
+  "network.prefetch-next" = false;
+  "network.predictor.enabled" = false;
+  "network.predictor.enable-prefetch" = false;
+  "layout.css.grid-template-masonry-value.enabled" = true;
+  "dom.enable_web_task_scheduling" = true;
+}
diff --git a/home-manager/firefox/default.nix b/home-manager/firefox/default.nix
index ebb0494..cc31962 100644
--- a/home-manager/firefox/default.nix
+++ b/home-manager/firefox/default.nix
@@ -62,6 +62,11 @@ in {
   programs.firefox = {
     enable = true;
     policies = {
+      DisableTelemetry = true;
+      DontCheckDefaultBrowser = true;
+      DisablePocket = true;
+      DisableFirefoxStudies = true;
+      DisableFeedbackCommands = true;
       Extensions = {
         Uninstall = [
           "google@search.mozilla.org"
@@ -96,6 +101,7 @@ in {
           (import ./config/tracking.nix)
           (import ./config/tracking-webaudio.nix)
           (import ./config/security.nix)
+          (import ./config/speed.nix)
         ];
         userChrome = ''
           /* Hide tab bar. Used with Sidebery */
@@ -123,6 +129,7 @@ in {
           (import ./config/privacy.nix)
           (import ./config/tracking.nix)
           (import ./config/security.nix)
+          (import ./config/speed.nix)
         ];
         userChrome = ''
           /* Hide tab bar. Used with Sidebery */
@@ -153,7 +160,10 @@ in {
             visibility: collapse !important;
           }
         '';
-        settings = merge [ (import ./config/preferences.nix) ];
+        settings = merge [
+          (import ./config/preferences.nix)
+          (import ./config/speed.nix)
+        ];
         extensions = with pkgs.nur.repos.rycee.firefox-addons; [
           clearurls
           darkreader