90002 Every single day I play, every time I try going into a new instance.

[Geigerette]

I opened all the ports. I removed antivirus software. I turned off the firewall. But I continue to receive error 90002. Some days not at all, some days only once, and other days constantly.
I also noticed that the error occurs when the server is full.

These are not real fixes and I don't understand why they are being repeatedly suggested by support members. The game is literally freezing and crashing which has nothing to do with startup, port forwarding, routers and firewalls.