High Sierra - 660ti graphics issues?

I checked "Inject Nvidia" in Clover options and can confirm I get the same result - no artifacts and no dual display. Reboot again without the option, the artifacts immediately come back.

Update: Unfortunately the artifacts show up again after several hours with the inject nvidia option checked.

 

Guys I have 660ti as well with artefacts. This is a poor workaround but works until HS gets updated.
Go to Displays-->Displays Preferences--> Click on Scaled. Mine is set to 1080P by default. I just click on 1080i or 720P wait for it to change resolutions then pick 1080P again. The artefacts seem to have gone. Must do this every time you reboot unfortunately.

 

Thanks, I will try that tonight !

 

thanks, in my setup, if i change resolution the artifacts are also gone but just for a 15 minutes or so. what makes me crazy is that those 15 minutes everything is perfect, smooth and no problems at all, very strange..

 

Thanks. When I switch to 4k the artifacts are gone. Switch to others the artifacts are back. One thing for me is if I use dual display the system will always freeze when I change resolutions, so I have to unplug one monitor for now.

Update: Lasted about 5 hours and then artifacts are all over the place.

 

Inject nvidia/True is not needed for your GPU. Most likely caused by onboard iGPU being enabled. Nvidia Drivers are buggy in 10.12+.

 

I can promise onboard iGPU is not enabled in my case- all internal graphics disabled on Gigabyte Z77-UP5-TH motherboard. This is very frustrating, as everything works perfectly in Sierra- and from looking around this problem seems to affect everyone with Kepler based Nvidia cards. There has to be a solution, something simple is likely causing this.... This also only seems to affect macOS windows (not other apps such as Chrome or VLC), so possibly this is a Metal 2 issue?

 

I got rid of my GTX760 a few weeks ago due to Drivers being unstable in 10.12+.

 

I can't confirm that, I had zero issues with my 660Ti in Sierra - at least not with the standard drivers. I remember though that when a long time ago I tried nVidia web drivers they were buggy and crashy, never used them again. This has so far been my most reliable graphics card, even on real Apple systems, pity High Sierra won't play along.

 

same issue. no final solution found, yet. only this helps temporarily: