Same pattern that has been bludgeoning us today is starting to play out again, so folks are definitely seeing long waiting room times atm.
We have a "not wonderful but should keep the game alive" mitigation. We disabled Squads mode globally. We enabled Duos in regions where Duos was disabled.
Basically there is a 0/12/72 ratio of strain on one of our databases from Solo/Duo/Squads respectively.
This is a temporary mitigation to keep things alive. We know it's a hard tradeoff, but we ultimately want to keep people able to play the game at all. In parallel with all of this we are aggressively working toward client-side optimizations we can roll out ASAP.