@XYZTHEEND If your Wi-Fi went down then the disconnect was at the router level. I'll try replicating that, then.
Edit: no luck. Unplugging the router, flushing my config to fetch a new one, all manners of other nitpicking with the settings to cause the connection to go off and back on, have all yielded Error 630 and not a crash.
I'm out of ideas. It might be out issues are separate, too. But I'm fairly sure GameGuard is the culprit, because crashing a system if it can't crash the game is its standard operating behavior. Essentially, the way GameGuard prevents hacking/tampering is by crashing the game to desktop if it detects something fishy. If it can't crash it for whatever reason, it crashes your system instead.