Okay, so i have an R9 390 GPU which has been working pretty well for the most part. my biggest Gripe would be PowerPlay. The fact that the core clocks bounce around depending on load to save power is cool in theory. but this in reality causes a lot of jitters, stutters, stability issues in certain games. especially with Vsync enabled. I've tested this by disabling ULPS in the games effected and it seemed to have corrected it. which is what i am doing now.
My recommendation to the AMD Gods: Please give us the ability / option to manage 2d / 3d clocks. There is no need for variable core clocks... it causes more bad than good. Give us a simple option to turn that off, and give us 2 settings to mess around with. 2d clocks / 3d clocks. preferably according to game profile.
Thank you for hearing me out.