The page he links to lists several other issues with this update, but I don't know if Apple, in fixing those, will fix this. So I suspect it's the OpenCL issue walterdavis cites above.
I have the same issue, and it started very recently, probably with the 10.15.7 security update, which I installed on 5/4, not the update, which I installed on 12/8/20 or the supplemental update installed on 4/2.