Follow up.
S25 ultra.
60zh - 1080p
No app in background using excessive use.
Normal use.
Factory reset.
Normal indoor temperature environments.
Passed feedback via Samsung members.
Definitely needs looking into as makes it unbearable hot to use and battery is simply none existent with the heat from the phone.
For a flagship and software... not impressed and definitely not normal.
So beware if going to use one ui 8 beta and hope these sort of issues will be in the public release of one ui 8.