I think yes at thia moment. hpefully samsung will look into overheat issue, daily usage perfomance lag . screen refresh not par with the adaptive rate on S21 ultra. feel buggy and laggy.
That's why I will never update the first roll out ever again. I used to have a Note FE & updated it to OneUI 1.0 but had the same buggy experience. When I bought my S10e, I waited until OneUI 3.1 so that I'm convinced it's stable to update from OneUI 2.5
