frdl

Ah okay, thanks. I managed to get smooth playback in Final Cut Pro X with disabling the internal LCD-Display of my MBP with this App: https://github.com/Eun/DisableMonitor Resolve does not crash anymore, but still has poor playback. Premiere crashes while trying to play something. So at least Final Cut is usable. The rest is probably a driver thing which will take some time to get real AMD driver from Apple?

Thank you for your brilliant script goalque! My Sapphire RX 480 Nitro+ 8G in an Aikitio Thunder 2 is working in macOS Sierra 10.12.1 Beta 5 with new Radeon4100.kext. I just took the ID from Radeon4000.kext I have it running on a MBP Retina 10.1 with dGPU GeForce GT 650M. It ist much smoother with Radeon4100 and there is no Safari render lack anymore. So surfing and stuff on a 4K Display @60hz is smooth. It is rendering faster in Final Cut Pro X and has a good LuxMark Score. Unfortunately the Playback in Final Cut Pro X is stuttering every 2-3 seconds. So its not usable. DaVinci Resolve 12.5.2 detects the Card but crashes if enabled. So I can't use it either. And I could not get it to work in Windows 10. If pluged in while booting I just get a black screen. So I downloaded your EFI to see if it could get better, but I can´t start OSX or Windows from it or deactivate the dGPU do I need a real version? not the Demo? As I understood you just made the Demo public? Or did I do something wrong with the EFI? Or can I get it somewhere else or from you? Thanks!