AMD/ATI Pixel Clock Patcher

[Adoniram]

Hi All,
First thanks for making a patch that enables the use of GPU BIOS modding on my RX 480 which yielded ~16% increase in MH/s performance for ETH mining.

Second... I've got some issues I'm hoping ToastyX and the other smart people here can help me with:

Using an MSI RX 480 on Win 10 x64 with gpu driver version 17.12.1, I used GPU-Z to backup my GPU BIOS. Then I used Polaris 1.6.5 to modify the memory timings. I flashed with AtiFlash 2.77, and rebooted.

Naturally, there was zero graphics output. I had to switch to integrated graphics, run the Pixel Clock Patcher, reboot, and I was back to being able to use my GPU. My MH/s went up, which was great, but some other weird things happened...

If my machine was idle enough to turn off the display, I would return to find all my windows were resized to the top left part of my screen in a 640x480 pixel area. If I opened "Display Settings," I would notice that there was now 2 monitors on my machine: the actual monitor (I only have one, and have always only had one), and a mysterious 640x480 monitor... Checking device manager revealed a "non-pnp monitor" but otherwise was inexplicable. If I "duplicated" the monitors, scaling would become problematic and I would have to boot, login, logout, and login again to get scaling back. (I use an ASUS 4k monitor) Also, text became inexplicably blurry...

I was frustrated enough with this and other issues that I had to roll back to the old GPU BIOS, uninstall AMD drivers via their cleanup tool, and install the latest drivers again. Text is clear, the 2nd mystery monitor is gone, and unfortunately my MH/s went back to the old way it used to be.

My guess is that the BIOS is just incompatible on a variety of fronts. Are there any other patches or methods of getting around these issues so that I can benefit from better timings, but also still live with my computer? Thanks!

(edit: I do NOT have secure boot enabled)