diff --git a/depot_tools/win_toolchain/package_from_installed.py b/depot_tools/win_toolchain/package_from_installed.py
index 552a84a0..5cecfd18 100644
--- a/depot_tools/win_toolchain/package_from_installed.py
+++ b/depot_tools/win_toolchain/package_from_installed.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# Copyright 2022 The Chromium Authors and Alex313031. All rights reserved.
+# Copyright 2023 The Chromium Authors and Alex313031. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
diff --git a/src/chrome/browser/thorium_flag_choices.h b/src/chrome/browser/thorium_flag_choices.h
index f8ef7680..61090c12 100644
--- a/src/chrome/browser/thorium_flag_choices.h
+++ b/src/chrome/browser/thorium_flag_choices.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2022 Alex313031. All rights reserved.
+// Copyright (c) 2023 Alex313031. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
@@ -78,6 +78,18 @@ const FeatureEntry::Choice kNumRasterThreadsChoices[] = {
      blink::switches::kNumRasterThreads, "4"},
 };
 
+const FeatureEntry::Choice kForceGpuMemAvailableMbChoices[] = {
+    {flags_ui::kGenericExperimentChoiceDefault, "", ""},
+    {"128",
+     "force-gpu-mem-available-mb", "128"},
+    {"256",
+     "force-gpu-mem-available-mb", "256"},
+    {"512",
+     "force-gpu-mem-available-mb", "512"},
+    {"1024",
+     "force-gpu-mem-available-mb", "1024"},
+};
+
 #if BUILDFLAG(IS_LINUX)
 const FeatureEntry::Choice kPasswordStoreChoices[] = {
     {flags_ui::kGenericExperimentChoiceDefault, "", ""},
diff --git a/src/chrome/browser/thorium_flag_entries.h b/src/chrome/browser/thorium_flag_entries.h
index e0cfe7e4..d91ba773 100644
--- a/src/chrome/browser/thorium_flag_entries.h
+++ b/src/chrome/browser/thorium_flag_entries.h
@@ -9,6 +9,14 @@
      "Enable Dark Mode",
      "Enables dark mode for all Thorium instances.",
      kOsDesktop, SINGLE_VALUE_TYPE(switches::kForceDarkMode)},
+
+#if BUILDFLAG(IS_LINUX)
+    {"auto-dark-mode",
+     "GTK Auto Dark Mode",
+     "Enables Thorium to automatically change to Dark Mode according to the system GTK Theme.",
+     kOsLinux, SINGLE_VALUE_TYPE("auto-dark-mode")},
+#endif // BUILDFLAG(IS_LINUX)
+
     {"force-high-contrast",
      "Enable High Contrast Mode",
      "Enables high contrast mode for all Thorium instances.",
@@ -49,6 +57,14 @@
      "Enable Native UI Inspection in DevTools",
      "Enables inspection of native UI elements in devtools. Inspect at `chrome://inspect/#native-ui`",
      kOsDesktop, SINGLE_VALUE_TYPE(ui_devtools::switches::kEnableUiDevTools)},
+    {"double-click-close-tab",
+     "Double Click to Close Tab",
+     "Enables double clicking a tab to close it.",
+     kOsDesktop, SINGLE_VALUE_TYPE("double-click-close-tab")},
+    {"show-fps-counter",
+     "Show FPS Counter",
+     "Draws a heads-up-display showing Frames Per Second as well as GPU memory usage.",
+     kOsDesktop, SINGLE_VALUE_TYPE(cc::switches::kShowFPSCounter)},
     {"disable-webgl2",
      "Disable WebGL 2",
      "Disable WebGL 2. Useful for certain GPU/OS combinations.",
@@ -65,30 +81,22 @@
      "Disable Web Security",
      "Don't enforce the same-origin policy; meant for website testing only. See `https://web.dev/same-origin-policy/`",
      kOsDesktop, SINGLE_VALUE_TYPE(switches::kDisableWebSecurity)},
-    {"double-click-close-tab",
-     "Double Click to Close Tab",
-     "Enables double clicking a tab to close it.",
-     kOsDesktop, SINGLE_VALUE_TYPE("double-click-close-tab")},
-    {"show-fps-counter",
-     "Show FPS Counter",
-     "Draws a heads-up-display showing Frames Per Second as well as GPU memory usage.",
-     kOsDesktop, SINGLE_VALUE_TYPE("show-fps-counter")},
+    {"force-gpu-mem-available-mb",
+     "Set GPU Available Memory",
+     "Sets the total amount of memory (in MB) that may be allocated for GPU resources.",
+     kOsDesktop, MULTI_VALUE_TYPE(kForceGpuMemAvailableMbChoices)},
      
 #if BUILDFLAG(IS_LINUX)
+    {"enable-native-gpu-memory-buffers",
+     "Enable Native GPU Memory Buffers",
+     "Enables native CPU-mappable GPU memory buffer support on Linux.",
+     kOsLinux, SINGLE_VALUE_TYPE(switches::kEnableNativeGpuMemoryBuffers)},
     {"password-store",
      "Password Store Backend",
      "Choose the password store backend, instead of using the automatically detected one. "
      "Sometimes the default detected backend is incorrect, or you would want `Basic`, "
      "instead of the platform provided password stores on Linux. (i.e. for portable usage.)",
      kOsLinux, MULTI_VALUE_TYPE(kPasswordStoreChoices)},
-    {"auto-dark-mode",
-     "GTK Auto Dark Mode",
-     "Enables Thorium to automatically change to Dark Mode according to the system GTK Theme.",
-     kOsLinux, SINGLE_VALUE_TYPE("auto-dark-mode")},
-    {"enable-native-gpu-memory-buffers",
-     "Enable Native GPU Memory Buffers",
-     "Enables native CPU-mappable GPU memory buffer support on Linux.",
-     kOsLinux, SINGLE_VALUE_TYPE("enable-native-gpu-memory-buffers")},
 #endif // BUILDFLAG(IS_LINUX)
     
 #if BUILDFLAG(IS_WIN)
@@ -98,7 +106,8 @@
      kOsWin, SINGLE_VALUE_TYPE(switches::kDisableWindows10CustomTitlebar)},
     {"enable-exclusive-audio",
      "Enable Exclusive Audio Streams",
-     "Use exclusive mode audio streaming for Windows Vista and higher. Leads to lower latencies for audio streams which use the AudioParameters::AUDIO_PCM_LOW_LATENCY audio path. See https://docs.microsoft.com/en-us/windows/win32/coreaudio/exclusive-mode-streams for details.",
+     "Use exclusive mode audio streaming for Windows Vista and higher. Leads to lower latencies for audio streams which use the AudioParameters::AUDIO_PCM_LOW_LATENCY audio path. "
+     "See https://docs.microsoft.com/en-us/windows/win32/coreaudio/exclusive-mode-streams for details.",
      kOsWin, SINGLE_VALUE_TYPE(switches::kEnableExclusiveAudio)},
 #endif // BUILDFLAG(IS_WIN)
 
diff --git a/src/v8/BUILD.gn b/src/v8/BUILD.gn
index 0239ebd1..c43749bf 100644
--- a/src/v8/BUILD.gn
+++ b/src/v8/BUILD.gn
@@ -1253,11 +1253,9 @@ config("toolchain") {
       ldflags += [ "/STACK:2097152" ]
     }
     if (is_linux) {
-      # Increase the initial stack size. The default is 1MB, this is 2MB. This
-      # applies only to executables and shared libraries produced by V8 since
-      # ldflags are not pushed to dependants.
-      cflags += [ "-O3 -mavx -maes" ]
-      ldflags += [ "-Wl,-O3 -mavx -maes" ]
+      # Full optimization for V8.
+      cflags += [ "-O3", "-mavx", "-maes" ]
+      ldflags += [ "-Wl,-O3", "-mavx", "-maes" ]
     }
   }
   if (is_android && v8_android_log_stdout) {