I don’t know if you are still monitoring this issue (even tho it’s already the weekend), but it seems to be related to DirectStorage, renaming the file dstorage.dll worked in 100% of the people who tested it so far, I hope it helps in the investigation. (Who discovered it: [Main Thread] PC - Game Client Freezes at “Logging into Diablo IV” When Launched on Certain NVMe Drives - #246 by Toom-1290)