Opera 74.0.3911.160 (latest)
Just migrated all my stuff from my "old" Intel i9 to Apple M1 (using macOS built-in Migration Assistant).
Most Settings gone, all entries in Quick-Start gone - this can be fixed quickly w. little effort.
Luckily it kept the stored passwords.
But. ... Opera is basically Unusable in its current release on M1. Sooooo sloooooow!
I even reset Opera and deleted all settings and everything - same story
Switched to Brave Browser for now, as Safari (which I used and loved since its existence), doesn't feature Plugins and I am Saturated of those idiotic cookie messages and Guugle asking me like 100x per day if I care to accept their silly terms, YuuTuube asking the same and wether I care to log in (No ! I don't :D) showing useless ads. Those were the 1st reasons to leave Safari and join Opera.
Opera is still the best Browser on Intel, not only for the unmatched feature of saving webpages 1:1 as PDF!
The best, except maybe the lack of the standard macOS key-Combo to cycle through windows
(i.e. Command and the 1st key next to the left SHIFT-key mostly the "<"-key :°)
Looking forward to the Devs solving this soon.