Local dedicated server crashes my game when i join

[Craftdadonut]

So recently, I've been trying to set up a local dedicated server for Garry's Mod, but every time I join it, it goes up to "Sending Client Info" or whatever then it just crashes my game (hl2.exe has stopped working).

My local dedicated servers that i previously had up worked fine, this has been happening for some time now (I only recently started playing GMod again).

sv_loadingurl is set to " "
Doesn't work if I setup the dedicated server on my current computer, or another one on my LAN
I've port forwarded
I've validated my game cache
I've disabled all workshop addons, the server has no addons/lua scripts either AND I've also tried removing any local custom lua scripts.
Server is up to date, Half-Life 2 is up to date, GMod is up to date
Local dedicated servers for other source games work fine
Other servers work, and when I host it on my game client it works too.

When my friend joined, he only got the error once and the next time he joined it worked fine.

UPDATE: It works for everyone else
But it still wont work for me :suicide: