UPDATE: It is now working.
Not sure why. I did the check integrity of files option in steam
GO TO STEAM LIBRARY
Right click on Baldur's Gate 3
Go To Properties
Go to Local Files
Click on "Verify Integrity of Game Files and let it run ..... if it says "All files ok ... or some such ... " you're golden ...
In my case, it said... one file corrupted and re-acquiring ... and now it worked ...
BUT >>>>>>>>>>>>>>>>>>>>>>>>>
I did change the game system from Vulcan to DirectX11 ....
But I changed it back to Vulcan and it still works so.... try doing both
