Updated to the latest Android 10 and immediately ran into issues. The tablet kept getting more and more laggy then started to display out of memory messages and today it just started rebooting every 5 minutes or in the middle of any activity like opening an app or uninstalling things. Really not sure what to do since there is not easy diagnostic to identify this problem or solve it. I've "wiped the cache", taken it to "safe mode" and have properly rebooted it after full power off. Apart from wiping it clean and starting again nothing else comes to mind. I am thinking of going back to Android 9 as well since clearly the current version from Samsung is not stable at all.
The only way to solve it was to reformat tablet by wiping everything. Make sure you have a full backup before you do it. It reinstalls Android 10 but performance is way better and I see other improvements as well.