Hey I've been having this issue, that when I boot substance Painter 2021, either through Steam, or the creative cloud app. The Application boots, but then freezes on a white screen after the startup window disapears. (as seen in the screenshot).
Which gave me the idea, to unplug one of my monitors. after Unplugging, and only one remained. Substance Painter would Boot and open correctly. When I closed and plugged the monitor back in again. It would then crash.
- I can confirm both Dual monitors are plugged into the graphics card.
So just leaving this here for anyone else who might be having the same issue. and Log a bug with the software.