Frequent auto-disconnect

Hey everybody

I recently got back into gmod, but I’ve found that I can’t play on a server for more than 10 or so minutes without being auto-disconnected due to connection issues (which doesn’t occur in any other game). Is there any way to fix this?

[editline]17th December 2013[/editline]

http://puu.sh/5QqJl/e0ab946d5e.jpg

When you say it doesn’t happen in any other game, does that include Source games as well? (Such as TF2, CS:S, HL2:DM)

my mistake, it doesn’t happen in any other game except for source games. (though gmod and tf2 are the source games i have installed, and the issue occurs in both)