diff --git a/desktop.nix b/desktop.nix
index 62af154..6502007 100644
--- a/desktop.nix
+++ b/desktop.nix
@@ -100,6 +100,8 @@ in {
     };
     security.rtkit.enable = true; # Real-time support for pipewire
 
+    # Enable running X11 apps on Wayland
+    programs.xwayland.enable = true;
 
     # Hardware-agnostic audio denoising
     systemd.user.services.pipewire-noise-filter = {
diff --git a/hardware/nvidia/proprietary.nix b/hardware/nvidia/proprietary.nix
index 73379ef..bfc39b2 100644
--- a/hardware/nvidia/proprietary.nix
+++ b/hardware/nvidia/proprietary.nix
@@ -51,6 +51,7 @@ in {
         "__GL_YIELD" = "USLEEP"; # use usleep(0) instead of sched_yield() -> better performance in most cases
         "__GL_ALLOW_UNOFFICIAL_PROTOCOL" = "1"; # allow unofficial GLX protocol if also set in Xorg conf
         "__GL_VRR_ALLOWED" = "1"; # Try to enable G-SYNC VRR if screen AND app is compatible
+        "KWIN_DRM_USE_EGL_STREAMS"  = "1"; # Make KWin use EGL Streams, because otherwise performance will be horrible.
       };
     };
 }
diff --git a/packages/firefox.nix b/packages/firefox.nix
index cb6660b..66f4723 100644
--- a/packages/firefox.nix
+++ b/packages/firefox.nix
@@ -13,8 +13,11 @@ let
         prefs
       );
 in pkgs.wrapFirefox pkgs.firefox-esr-unwrapped {
+    forceWayland = true;
     cfg = {
       smartcardSupport = true;
+      pipewireSupport = true;
+      ffmpegSupport = true;
       enablePlasmaBrowserIntegration = true;
     };
 
@@ -113,5 +116,12 @@ in pkgs.wrapFirefox pkgs.firefox-esr-unwrapped {
       "privacy.trackingprotection.enabled" = true;
 
       "browser.shell.didSkipDefaultBrowserCheckOnFirstRun" = true;
+
+      "media.ffmpeg.vaapi.enabled" = true;
+      "media.ffvpx.enabled" = true;
+      "media.navigator.mediadatadecoder_vpx_enabled" = true;
+      "media.rdd-ffmpeg.enabled" = true;
+      "media.rdd-ffvpx.enabled" = true;
+      "media.rdd-opus.enabled" = true;
     });
   }