I signed up for Xbox Game Pass and downloaded this yesterday. I ran into the problem with the app hanging during the initial download ("update.") I had to restart it once, then it downloaded all 91 gigs. I'm not sure what it was doing the first time... I figured it was just a glitch.

The game does load very slowly. This is on a system with 32 gigs of RAM and NVME SSDs.

It looks amazing though!