I've been searching but I don't see anyone seem to have reported same issue.

Since about 3-4 days ago, in mid game (I'm just in Act 1), my TV would randomly go black. Have been playing since the game's launch on PS5 (yeah I'm a slow player) and have not encountered this problem until very recently.
The sound continues and the game continues - not frozen or anything. When I turn my TV off and on again, the game is as it was. I would then play and it would happen again. There doesn't seem to be any gameplay scenario that I can correlate it to. Yesterday I stepped away for a few moments and left the game running and it went blank with no input.

I've tried to have HDR off, HDR On, HDR Auto. All went blank at some point - it can happen as quickly as within 5 minutes.

I've played other PS5 games since and it doesn't seem to happen.

I've got the latest PS5 Software and BG3 is v.4.1.1.3956130.

Has anyone come across this or can suggest anything I can try? Thanks in advance.