I don't know where to send an email for you guys to let you know of problems but I am running an XFX R9 280x and the latest beta driver for the witcher 3 that you guys have up runs like poo. It makes games studder (every single one I have) so hopefully you guys will release a new patch soon that is stable. Hopefully this gets into the right hands. Haven't had a stable update since January
No...on each driver download page (and others) there is the ISSUE REPORT forum which goes the the driver development team It is just a reporting instrument, do not expect to be replied to.
Also, if you would enter "witcher 3' in the search box, you could get yourself up to speed.