My s25 ultra has had a LOT of over heating experiences whilst using the betas and battery drain as a result. Standard use, 60z and 1080p & no apps running and even overheats after a few minutes and factory reset etc all done and no improvements.
Now on beta 3 and still not improved or optimised.
Since the end of Beta 1, when I joined the programme, I have switched to light performance mode which prioritises cooling and have no issues. It got hot yesterday but I was in direct sunlight and thermal guardian confirmed it was the environment. Perhaps switch to a light profile if not a heavy power user.