Garry’s Mod : Performance Refresh (Chromium x64 + Config)

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Garry’s Mod : Performance Refresh (Chromium x64 + Config)​

This guide consolidates a few safe, reversible tweaks to reduce client-side bloat and improve performance on older installs.

Before You Begin​

• Close GMod and Steam while editing files.
• If autoexec.cfg does not exist, it can be created.
• You may revert any change at any time by removing the corresponding entry.

Step 1 — Switch to the Chromium x64 Beta​

1. Right-click Garry’s Mod in Steam and choose Properties.
2. Open the Betas tab.
3. Select: x86-64 — Chromium + 64-bit binaries.
4. Allow Steam to complete the installation.

Step 2 — Add a Lightweight Auto-Config​

1. In Steam’s Properties → Installed Files, click Browse.
2. Navigate to: ./garrysmod/cfg
3. Open (or create) autoexec.cfg with a text editor.
4. Paste the following, then adjust the framerate line as required:

gmod_mcore_test 1
mat_queue_mode 2
cl_threaded_bone_setup 1
cl_threaded_client_leaf_system 1
r_threaded_client_shadow_manager 1
r_threaded_particles 1
r_threaded_renderables 1
r_queued_ropes 1
studio_queue_mode 1
mat_specular 1

fps_max framerate_value
menu_cleanupgmas
host_writeconfig

• Replace framerate_value with your target FPS. For most displays, using your monitor’s refresh rate is appropriate (e.g., 60, 120, 144).
• Save the file.

Step 3 — Ensure the Config Executes on Launch​

1. Open Steam → Properties for GMod → General.
2. In Launch Options, add:

+exec autoexec.cfg

Step 4 (Optional) — Borderless Windowed Launch​

To start in borderless windowed mode, append these launch options (adjust width/height to your resolution):

+exec autoexec.cfg -windowed -noborder -w 1920 -h 1080

Notes & Reversion​

• If any setting causes instability, remove it from autoexec.cfg and restart the game.
• You may switch out of the Chromium x64 beta at any time via the same Betas menu.