You can disagree, that's fine. Doesn't make your opinion any more superior
I'm not a hobbyist, I'm a professional graphic artist. The only reason I use a Hackintosh (along with real Macs) is because Apple does not have a high end system that I want. I have a workflow that has issues with nVidia in general (and also many others are complaining about it as well).
For Vega, I have native boot resolution during BIOS and during Apple boot screen on my 2560x1440p (Apple Cinema Display) monitor. Are your issues with 4k displays? I don't have a 4k display or else I would test for you.
I have direct access to Apple engineers who work on Metal 2/Open CL and they have issues with nVidia as well and have told me so.
Apple is mainly optimized for AMD. Even their nVidia based older Macs have issues with nVidia + High Sierra.
I have 0 issues with the Vega FE and it works better than 980Ti's or 1080Ti's/1080 that I had before for testing purposes under High Sierra. No drivers needed and everything is fluid and no lag whatsoever.
My daily workload consists of having most Adobe applications open (Photoshop, Illustrator, After Effects, Premiere, Bridge) and OpenCL is being utilized fully, Chrome with multiple tabs open (30+), Davinci Resolve, etc.....nVidia would always slow down to a crawl due to bad drivers. This is why I have 64GB of RAM because this is my workflow and has been for 10+ years now including when using real Mac Pros (Cheesegrater and TrashCan). 128GB is on the horizon soon as memory prices drop.
Sierra was another story. nVidia worked fine for me and was rock solid. Not having to install any drivers for the GPU upon each system update is really good for me.
I love nVidia, especially CUDA, but I was tired of performance issues in High Sierra and getting as close as to a real Mac is always my intention with Hackintoshes. Also nVidia is obviously better in terms of raw performance and low power usage. In general, nVidia is way ahead of AMD in terms of gaming performance. Compute performance AMD is doing pretty well.
I plan to get a real Mac when a new 2018 Mac Pro is announced hopefully. Not having to deal with troubleshooting is always a + for me. I barely have enough time to sleep let alone troubleshoot day to day.
Although this X299 build has been the most stable Hackintosh I've had in a while.