thanks guys!!
Yes, I'm on a crossroad now with the GPU upgrade path, as many in CGI field are now. I use Redshift, and it's been working very nice on High Sierra with 2x1080ti, faster than on windows lol. But Houdini is less nice with these cards. OpenCL doesn't work (Vellum can only run on CPU). And I heard people are having issues with that in Catalina as well, so that's why I'm checking this point.
Can you tell if new H18.5 GPU minimal Pyro solver works "realtime" and as good as it should with Mac? And of course if Vellum runs fine with GPU? (I had to force OpenCL to CPU in order to make it work).