So I have to say that after one week spent running HS that I am personally wondering what these Apple engineers are doing. In my humble opinion it just isn't there yet. Thank God that I am on a 2017 iMac that can still run Sierra, or else I would be stuck in the same boat with the rest of the folks out there buying new Mac computers that have no choice but to run HS. I was really hoping to buy the new iMac Pro, but I am going to wait on a better HS. It's pretty pathetic when an OS is the deciding factor in me buying what appears to be an otherwise wonderful machine.