I have a s21 ultra upto date and generally ok.
I use the camera a lot varying resolution (8k/UHD60/FHD).
When using it the last 2 days it has fairly quickly starting to overheat to the point of unable to touch the area.
My device may have been picking up the 5G network (definitely was today).
The second fault is the last 3rd of the video the audio stops - I believe this is happening with one of the cameras only (not all video is affected).
The faults started to occur after I used the camera for around 2hrs continuously a week prior. (again different resolutions). Though that was fault free.