So... im done i sent a email to AMD to complain about the lack of software updates for such an expensive card and its low low low performance in windows 10.
personally i think that microsoft, apple and AMD are responsible but this is just plain stupid paying 300 for a card so you can play a few games on windows that mac doesnt support and it doesnt even work properly...
my device specs are
27-inch iMac With Retina 5K-display
- 4,0-GHz quad-core Intel Core i7, Turbo Boost to 4,2 GHz
- 32 GB 1867-MHz DDR3 SDRAM - 4x 8 GB
- Fusion Drive of 3 TB
- AMD Radeon R9 M395X with 4 GB video Ram