I've been trying to add a RX 480 through an Akitio Thunder2 on macOS Sierra 10.12.2, I have the eGPU recognised as r9 xxx, but it isn't doing any work (not listed on luxmark), even when connected to an external monitor through the rx 480's DisplayPort, there is output, but the ui is extremely laggy (likely due to the lack of hardware acceleration due to the fact that AMDRadeon4100.kext is not running), I have edited the plist to include the rx480's id, but it isn't running with a kextstat check. Is there anyway to get the RX 480 to work? Thanks.
