Slow performance with 1080 ti

I have been trying for 2 months now to get my Hackintosh running up to speed for video editing. I did a test using Premiere Pro, and it renders 5 times slower than an old 2009 Mac Pro with a GTX 760 using the same exact settings and clip.

System:

Sierra 10.12.5
GTX 1080 Ti
Intel Core i7 6700K 4.01 Ghz

Cinebench displays my graphics card properly, but oddly displays my CPU as 0C/0T @ 4.01 GHz

Cinebench results:

OPENGL: 108.70 FPS
CPU: 128 cb (ranking dead last)

My config.plist is attached.

Here is what I've tried with no success:

- disabled onboard graphics
- disabled CSM (and tried with it enabled)
- installed Lilu.kext and Nvidiagraphicsfixup.kext
- AGDPfix

Please let me know what else I can try.

tkan said:

My config.plist is attached.

Click to expand...

cpus=1 restricts your processor to just one core :

P1LGRIM said:

cpus=1 restricts your processor to just one core :

View attachment 269119

Click to expand...

Thanks. This helped tremendously. However my system still seems to be running slower than it should. Now render times are about 15% slower than the old Mac Pro.

tkan said:

Thanks. This helped tremendously. However my system still seems to be running slower than it should. Now render times are about 15% slower than the old Mac Pro.

Click to expand...

Why do you think that a MacPro6,1 is an appropriate SMBIOS for your hardware ?

Yeah I would try iMac17,1 with your configuration.

P1LGRIM said:

Why do you think that a MacPro6,1 is an appropriate SMBIOS for your hardware ?

Click to expand...

I've tried many different configurations and there doesn't seem to be any difference. What would you suggest and why?

tkan said:

I've tried many different configurations and there doesn't seem to be any difference. What would you suggest and why?

Click to expand...

There would be hardly any difference if you were using cpus=1 for all of them.
Look at everymac.com or the free Mactracker app and select the Mac that matches your hardware as closely as possible.
Change your SMBIOS and then implement power management for it.
Keep a copy of your current config.plist so that you can revert if required.