radeon pro graphics card in macbook pro 2017 not showing up

Just wondering if there’s any relatively low-hanging fruit I can find to ameliorate this issue. I guess making a Hackintosh with the fastest of these Best CPU For Rendering could be an option? but I really don’t want to spend that much time and money on it. I’m mostly interested in eliminating lag in the Viewport in Rendered/Raytraced mode, but I guess it would be interesting to know if there’s any way to do final renders faster also (a “CPU” farm?.but again, that’s not my main question). I’d even think about upgrading my iMac but I think the next version will have the M1 chip and Rhino won’t even run at all. If I shrink the Rhino window so that Viewport property shows about 2400x1900 pixels it becomes comfortably responsive again. If I switch to “Rendered” mode for the Viewport it’s so laggy as to be practically unusable if I have the window fullscreen (Viewport property shows 4198x2596 pixels).

I just upgraded from Rhino 5 and am disappointed with this aspect (but excited by several other new features of 7 so still happy I upgraded). Is there no Mac-compatible hardware I can get, or no software configurational changes I can do, to make Rhino 7 display faster on my iMac (2017 5K 4.2GHz i7, 40GB RAM and irrelevant? Radeon Pro 580 8GB graphics). So, to ask the original poster’s question in a slightly different way…

Radeon pro graphics card in macbook pro 2017 not showing up