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
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