Yes, there are still (many) bugs, with some more critical then others.
But a lot of of the times if there are fps problems it is some setting that can drop your fps from 40 to 10 if it is set too high (like my example here ) because some 1-100 value doesn’t mean anything without context.. 20 or 550 (animated) AI planes is a BIG difference.
An update for Windows/store app, or a driver could also be a problem. Many people have no clue what to do on a pc and just install everything without knowing what is actually installed/running on their pc.
Anyway, it’s always a good thing to report the issues to Asobo so they atleast know what’s going on.