GMod relies heavily on your processor to calculate physics and handle heavy scripts.
If you own GMod on Steam, the "autoupdate" feature is baked into the client. However, v161201 in its "full" packaged form often refers to a that includes an internal updater. This updater checks for missing game assets (like textures from Counter-Strike: Source or Half-Life 2 ) and downloads them without requiring Steam.
To enjoy the most stable experience, ensure your system meets the basic requirements (at least 4GB of RAM and a dedicated graphics card). Once installed, the first thing you should do is head to the menu. With the autoupdate feature active, you can start subscribing to "Best of" collections, and the game will handle the rest. Final Verdict