Bit of a weird one.
Settings>Security and Privacy>Updates>Google Play System Update
When checking for updates on Tab S8 Ultra it just sits there endlessly checking until I get fed up and back out of it.
I also own S23 Ultra and Tab S9 Ultra and both check as normal in under 10 seconds either finding an update or advising your device is up to date.
I've cleared cache partition on the Tab S8 but hasn't helped. Anyone with the Tab S8 kindly take a look and see if theirs is the same. Otherwise any ideas? Should point out that this has only started happening recently.
Cheers Rob