This is kind of unrelated, but there is an issue with "black zone" where a player will zone and the entire area will be black but players will still be around and moving. This appears to be caused by some kind of memory issue, either a memory leak related to swapping characters or assets not properly clearing from memory when they should due to a emulated directx (windows 11).

If a player zones into a "black zone" this is because the game ran out of allowed memory usage and could not load the zone into memory, so it shows as black.