Gmod server joining problems

Every time i try joining a server on here, as soon as the loading bar says ‘Sending Client Info’, the gmod window then stops and says “not responding”. I have restarted my comp, unsubbed and resubbed my addons, uninstalled and reinstalled gmod, and still nothing works. WHAT DO I DO?!? And for the record, i was able to join servers 2 days ago with no prob, and have no idea what changed… HELP ME IMMEDIATELY PLZ!!!