Pixel Clock Patch wont work Is there another way??

Hi there, I am trying to overclock my 1440p hannspree monitor to 80+hz, but am having some issues doing so.

I have tried installing different versions of AMD Crimson Drivers, but they all run into the same issue when I patch them using Toastys Pixel Patcher it doesnt seem to work and I am using a R9 Fury btw.

If there is a way of doing so manually PLEASE let me know as the 297mhz HDMI limit is whats limiting me.