Ok, I during last days I tried couple of things without help, but this is important:
I'm having the static/snow screen display issue after awakening from sleep on my 2018 Mac mini. By static/snow, I mean the monitor display looks like the pattern an old TV using an antenna would display if it lost its signal. I returned my first 2018 mac mini because of this issue and the...
forums.macrumors.com
Basically it shows this problem is essential to current Apples, not only hackintoshes.
It exhibits as "snowing" on some LCDs or 20 sec delay on other after long sleep.
Only workaround available which is only working in some cases seems to be to buy display port connection (LCD) or pulling cables out and in each time.
Its quite shocking considering Apple is apparently not abble to address this issue for whole last year. It would be funny if hackintosh community was actually able to solve it