Hi fellow 'rumors, After reading all about the exciting bootrom hacking and trying out dosdude1's High Sierra Patcher for older models no longer supported officially I wanted to try installing an AMD Radeon VEGA FRONTIER EDITION in this old, dusty Mac Pro 3.1 and see if I could get an extra year out of it until the fabled, new Mac Pro hits the scene in 2019 (or later). The good news is that it boots after running the modified High Sierra installation and correctly identifies the graphic card. The bad news is that acceleration isn't enabled, so everything is so far a slideshow. Not an optimal experience. Anyone have some pointers or tips I should try to get it up and running and usable? UPDATE: Seems the problem is related to the AMDRadeonX5000.kext, which were modified during installation (had a Radeon 5870 installed prior) with the High Sierra Patcher from dosdude1.