my gmod is srewed up

why does my gmod keep crashing!!!
evry time i spawn a prop like a explosive barel it starts lagging end i get
alot of erors in my consol and it drives me madd!!

plz help me!!!

Nevermind, lock this thread, please.

Clean your gMod. (delete username/garrysmod/garrysmod, NOT username/garrysmod)

If the problem persists, you’re probably in need of a computer that doesn’t suck dicks for a living.