Good day fellow gamers. 12/5/2020 moved to a brand new MacBook Pro with Catalina. Over 120 game-client crashes and about 80 full OS hard crashes later with 42 emails of crash dumps, error dumps, snapshots, you name it. There is even one action that I can take that has a 100% crash rate - taking the 'elevator' in the Guild Hall. I did everything that support asked me to do to attempt to find a solution. Final straw came when I whined a bit about them asking me to install the X11 windowing system and XQuartz. Both of these packages have been deprecated by Apple since 2016 and were first introduced in 2009. Nothing in these two packages address the only consistent error code in all of the dumps - no matter where and how the crashes came about. CoherentUI is listed as the causative exception every single time. With my whine, they served me the door - stating that they have exhausted every avenue to resolve my issue. I'd be interested in hearing from anyone that has the client running on Catalina. Or Big Sur - for that matter. Be well , stay safe.