So....what is the question again?
Check with AOC to see if their driver supports the RX GPU's.
According to the monitors manual, it list only the R7 and R9 GPU's
1. FreeSync function is working with DisplayPort. 2. Compatible Graphics Card: Recommend list is as the below, also could be checked by visiting www.AMD.com AMD Radeon R9 295X2 AMD Radeon R9 290X AMD Radeon R9 290 AMD Radeon R9 285 AMD Radeon R7 260X AMD Radeon R7 260
(From page 13 of the manual)