I don’t know if it’s related but I have had the game outright crash with “out of memory” errors. At first I thought it was background apps so I started closing more of them before opening WoW, but then today I got an “out of memory” error during startup when I still had 15 GB of memory free.
Something seems to be different about the way the game handles memory, or maybe it’s how Windows 11 handles memory compared to older versions of Windows?