Thanks for the performance optimizations.
With GTX 980, now Adaptive Sharpen and sharpen edges roughly seem to be equally fast. Adaptive Sharpen is still slightly faster, I get a little lower GPU usage and rendering time with it. So there seems to be a difference to Kepler.
Regarding SuperRes again:
I read here that SR would produce an overly sharp picture to some when doing 1080p -> WQHD. However, I can hardly believe this. I made a sharpness comparison with a game screenshot rendered in WQHD, and despite of SR with strength of 3 on top of Jinc AR scaling, it's still noticeably softer than the original (and much closer to ground truth than just Jinc AR without SR):
Original in WQHD:
Downscaled to 1080p with C-R GL:
Upscaled to WQHD Jinc AR without SR:
SR strength 3: