I’ve tried this on box DirectX 10 and 11 with all settings at minimum. Going into the plaza through any of the main ways and showing up in the subway immediately tanks the game for me regardless of how many people are present in the server. I do not have this issue with any other portion of the game including other lobby portions. the moment I get into the subway I get maybe a couple seconds per frame at best. I have a GTX 1650 for context.
How long does this issue continue for? Does it go away after awhile?
It does go away after a while. It takes roughly the same amount of time to get to a somewhat smooth rate as it did to get past the loading screen, if not a little longer, which feels like in total about 20 minutes. By that point I can make my way up the stairs to the map and teleport elsewhere. I don’t have the issue at any other point in the map, even when I’m initially joining off of friends.