Hi torsten

I did several google searches using HP Z820 and graphics slow, and found others with "slow" performance problems, with
other software. There is all kind of fairly technical talk about the problem.

This site talks about the Z820 being "slow," and a type of Mac which is "twice as fast," and costs half as much:

https://forums.adobe.com/thread/1445267

- Brian, (not an expert)