Tbh, I experienced panel freezing even on AMD at the Plasma 6.1 release. That was right when I switched to Gnome though, so I didn't get to see 6.1 after the fixes
Imo, KDE Plasma needs to be more open to delaying releases if major bugs are found. I won't tell them "just fix the bugs lel" because they'd need more contributors for that and it's rude, but rn many bugs are known before the release of a new major feature and in spite of that they're rolled out anyway