Question: While tinkering with my PowerSpec 1710 laptop connected to my Samsung UE510 via DisplayPort 1.2 cable, I was able to use CRU and NVCP to setup an overclock to 2160p@72Hz. Trying to do the same on AMD R9 390 yields a warning about the resolution not supported. 1) Is there a way to force the custom resolution? I have the settings I used on the laptop, and I created the resolution in CRU. 2) Could it be the DP cable supplied by Sapphire isn't DP1.2?