According to ioreg, your graphics setup looks ok (QE/CI).
You will need to provide more details on what you see as an issue.
But your USB configuration is wrong (you need to create custom SSDT for USBInjectAll to stay within 15-port limit).
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EDIT: ITS WORKING!!! I had to include the voodooTSCSync kext. Big shout out to MikeCa for the info I needed (
https://www.tonymacx86.com/threads/success-sierra-10-12-hp-envy-750se-i7-6700k-980ti.206837/)
Kind of weird because I used that kext when I first tried to hack this machine, but then again, I didn't know what I was doing a week ago.
Thanks for the help as well RehabMan
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The main issues are clunky launchpad and dock animations, playing songs in iTunes sounds like play-pause-play-pause. Trying to use the visualizer would result in no animation, just a black window.
Most of the time booting to the login screen, the apple logo+loading bar screen covers the login screen. So I have to type my password blind, wait for it to log in, use the shift+cmnd+Q short cut to log out to even see the login screen. Sometimes it boots straight to the login window but the avatar above where you type the password starts moving to the right of the screen. All around weird stuff.
Even typing some of the commands in terminal, I had to go through the menu tabs for the text in terminal to appear after I typed it. I seems like I have to force it to refresh the screen if that makes any sense.
When trying to install mojave, the language select window, disk utility, and the installer window would stack on top of each other, unlike a regular mac where only one window was open at a time.
Edit: Also, when I run Intel Power Gadget, the GFX frequency line is stuck at zero. Which is why I'm thinking this is a graphics problem, unless this could caused by a bad PSU, but I don't think it is because Windows 10 runs completely fine.
I was going to fix the USB SSDT after I got this "graphics" issue fixed, unless, for some strange reason, my USB config is causing this mess?