Hi shane,

re:
> I am getting very slow viewport feedback when rotating, selecting etc in larger models.
> I loaded up the same model in 3.1 and I get much a faster / smother response. I am
> using OS X 10.123.4 with a Radeon Pro 580 graphics card.

Can you please e-mail me at moi@moi3d.com and I will send you a test version with some changes that may help.

Thanks, - Michael