I'm a bit concerned that:
A) Devs hasn't updated the known issues thread with this... I'm guessing probably because they're having a hard time nailing down the issue and filtering through the noise. There are people with addon issues and data caching issues, which is clearly different than consistent frame rate issues that I've been experiencing.
B) There are a lot of posts that just doesn't give enough information and data. People coming to say that they're seeing problem A or problem B is good. However, we need for people to post their hardware configuration along with that, MacOS version.. etc... that way we can actually correlate which problem might be related to what hardware profile.