[macOS Sierra on 775] Weird issue: tiny windows

Hi, I'd like to know if any of you can help to debug this weird issue. I just started in this hackintosh world, and since I had an old pc laying around, I though I could give it a try as a hackintosh machine.

I tried many different setups, but most of the time I finished the installation and it never booted fully again. Not even to safe mode. This is what I could achieve until now (along with the kexts, bugs and such):

I still need to debug mostly everything, but the most annoying bugs are two: sometimes the Apple logo won't dissapear before showing the login screen so, even if I can login (I can hear the sounds, and run terminal stuff), and can't see anything "behind" it. The second issue that annoys me the most is this weird tiny windows behaviour, which happens at random. I can still click stuff inside the window, though, so it's just...tiny. I'm still dealing with random crashes from time to time, but that's not so horrible as these two other thing.

This is what I mean by \"tiny windows\".

Thanks in advance for any help, any comment is really appreciated.