Thanks for the reply. I tried it with Chrome, Firefox, Edge, and Zoom.
I found out that, when projecting via my phone using Spacedesk on USB while on HDR:
1. Chrome and Edge will CRASH with any window shared via Zoom, Google Meet, and Messenger. So it is not exclusive with Powerpoint. All windows shared will cause the crash, including File Explorer.
2. Zoom will also CRASH when sharing any window.
3. On Firefox, it WILL NOT crash, regardless what window/program was shared.
I hope this helps.