Yeah, install Sierra, you can have problem with High Sierra due to your GPU not supporting Metal at all.
Or use the intergrated graphics, the i5 3570K have the Intel HD 4000, which is supported by macOS Mojave.
So I have an issue with my hackintosh (that makes it unusable, really)
It's that the screen will go black for like 1/2 seconds every 5 minutes or so (depends, sometimes it can go as far as 5 per minutes)
I found a video showing the issue (not mine, but that's exactly the same thing that's...