Gmod crashing when joining servers

I’ve had this problem since, well, forever. I join a server everything works okay, and i join another, and another, but about on the fourth one, when the game gets to ‘‘retrieving server info’’ and the bar gets to the middle, the process disappears and there is no error message. Can someone tell me what that is?

I have 4 gigs of RAM and a 2,4 dual core processor.
When i join a regular server with about 60-100 players, it takes me 5 min just to join it. Is that normal for a computer with my specs?
Is it bad not to have steam installed on C:?

Seriously no replies? Can i get some advice or something?

start singleplayer after 4 servers. IDK how to reallly fix it. but joining singelplayer worked for me