I did some research and if this is still a problem I found a steam community thread with fixes to different gmod crashing scenarios . steamcommunity.com/app/4000/discussions/1/617328415073613954/

I hope this helps

I did some research and if this is still a problem I found a steam community thread with fixes to different gmod crashing scenarios . https://steamcommunity.com/app/4000/discussions/1/617328415073613954/ I hope this helps