I've had problems with the AMD drivers in the past. How are they working for you?
I do not have an AMD GFX card on this PC, just an AMD APU so not sure if I'd see any gain. I tried them before to solve problems with World of Tanks using Playon Linux/WINE. After 2 reinstalls of Mint due to problems with the proprietary drivers I am leery of trying them. It is still a little wonky on Sparky but much better so I've been ignoring the occasional day-glo colors that I see while playing.