Im bad at english so forgive me.
HIS RX 480
My problem is FPS drop on Overwatch (full low settings - AI Mode). From 70 to 50 - 40, mostly when combat 6vs6 or 4vs6. I got this problem since "Crimson ReLive Edition 17.7.1 Optional", that's mean driver 17.7.2 and 17.8.1, I still got the same fps problem on overwatch. Even I update to 17.8.2, fps drop problem still there. The best driver that I can use is 17.6.2 and it really good, no problem at all.
My question is: problem come from new driver update?? Because my PC work very well at Crimson ReLive Edition 17.6.2 , so I think the problem is driver.
If you are not experiencing any issues, there is no reason to install the newest drivers. Stay with the drivers that work for you.