I have the exact same problem. I tried a fresh win11 install and i stll have the same problem. In windows or silient mode the computer will freeze predictably in about 90 seconds.
This also causes issues booting up. It may hang up 3-4 times before making it to windows.
I have to run in performance or turbo mode while on battery which is not ideal.
I cant any information on what to do, everything is fresh and clean install. Temps look good. Occasionally i get a blue screen with a watchdog error, but that is rare.