BigSur Which Editor Works?

I usually run a few versions of the Unity Editor behind the current one. I do this because in previous years had terrible experiences upgrading to the current version of the Editor.

Short Story: I had my Android game crash on user's devices with a specific GPU due to some Unity bug (which was not addressed for weeks). Something variations of this happens almost every time I upgrade to the newer version of the Unity Editor. It's just painful. My ratings go down, users are angry.

However the version I am running currently 2019.2.21f does not seem to perform well on the newest macOS Big Sur Update. No errors or anything, it's just sluggish. I mostly target Android and IOS.

So I guess my question is: What is a good stable version of the Unity Editor that works well on BigSur and can target Android & iOS games without any major known issues.

FYI I am running a 2017 15" MacBook Pro
2.8 GHz i7 16 GB RAM,
Radeon Pro 555 2 GB