While useful, using an auto clicker in GMod is not without its downsides.
Do not set your CPS (Clicks Per Second) above 15. gmod auto clicker
Most bans happen because a player forgets the auto clicker is on. If you use a toggle macro (F8 to start), you will inevitably walk away while your character fires into a wall, drawing admin attention. Instead, use a "Hold to click" macro (e.g., Hold "C" to spam click). When you let go, it stops. While useful, using an auto clicker in GMod