I’m using a Huion KAMVAS GT221 pro with windows 10 and zbrush has no pen pressure for me. it works fine in other programs like photoshop etc. but nothing in zbrush.
ZBrush needs the drivers to be written using the WinTab API. This link should help you to get what you need.
installed it, doesn’t seem to have changed anything.
I recommend checking with the tablet manufacturer to see if they have WinTab drivers available.
they say they do an I’ve gone to contact them i’m just waiting for a response hoping someone else knows in the mean time.