Mac mini (Late 2014)
processor: 3 GHz Intel Core i7 double cœur
memoire: 16*Go 1600 MHz DDR3
graphisme: Intel*Iris 1536 Mo
Mac OS Monterey version 12.6.6

I have the same trouble. Before patch6.4 i was playing fine, since then I can log in but it's extremely laggy and often the screen will turn black.
I can still hear the sound and even do some actions, i just lose the screen, at least it kind of stop lagging, i just can't see nothing. I teleport to my house, quit, but then i have to force quit since the game doesn't completly quit.

it happens anywhere there are a lot of players or lot of graphics. I have turned down all my graphics already.

My wife doesn't have trouble playing on the ps4.......


hopefully there is a solution

thank for helping

Skuggi