August 2019
I get code 100 for all my servers, and I have done all the troubleshooting, changed connections, PlayStations, accounts and DNS settings.
It won't show me in a party with my friends, won't open friend menus,
won't accept invites,
and when I get in, it hides my team mates from me. Then, some games,
I'm randomly kicked and I can't invite them back, no matter what avenue I choose.
Preloading
I even swapped to Salt Lake City Servers with MODERATELY better luck.