Disabling RAM (odd I know)

Hey all,

Not sure if this is the right section (might be under software)

I work for an architects company in London and we recently purchased Corel Painter X.
Installed the application later to find that the application will not work on machines with over 8gbs of RAM (x64 machines)

Unfortunately our machines are 16 - 32gbs of RAM.. Now downgrading a user from 32 to 6gbs is not feasible. As far as I'm aware you are not able to disable ram via windows (unless you have a strange bios setup, which I don't) but I thought I would throw it out in to the wild and see if you guys know of a way to spoof RAM or something similar via a reg hack?

Thanks for any information

P.S Corel told me "no we are not fixing this issue"

great.