Hmm, might be a bug, maybe try these;
Validated Game Cache
Reinstall Arma 3
Keep rejoining the server
These are the only things I can think about getting into the server.
I reinstalled it. no luck :( Tried Reallocating memory nothing. Scanned it nothing popped up. And lower/update drivers gives the same result. I suppose RIP PC.
Hmm, my disk usage is at 100% not sure why this is like this.