Mac Project broken after upgrade to 2020.2.1

Unity Engine
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1

endless console errors along lines of:

RenderTexture.Create with bindMS failed: antiAliasing 2 with unsupported format - RG11B10 UFloat.
UnityEngine.GUIUtility:ProcessEvent (int,intptr,bool&)

after upgrading project from 2020.1 to 2020.2.1
Hard to use a project that is continually erroring (obviously have back up but the project works on Windows, just on a basic mac it does not - maybe gpu requirements changed?)

bug# 1306146

2

This is basically broken rendering within the 3d views as soon as project loads with lots of bind errors -
Looks like an obscure error with MSAA 2x not supported when on in an asset