I will try removing it. Would there be a benefit for me to go to 18,3 with IGPU enabled? I think I am pulling good numbers here.Yes.
Since you are using Z270 motherboard, you probably don't need EmuVariableUefi in /EFI/CLOVER/drivers/UEFI/.
Please try removing it. If it works, you should get kernel panic logs if/when you get a kernel panic. This will go a long way to helping figure out what's the cause of your crashes.
Check their hackintool there is headless metal and it says NO.IGPU should not appear in System Information when configured to be headless. Maybe that was the problem.
iMac18,3 is a closer match to your hardware. There should be no downsides to using it.
Everything is working stably for me. I do not see any freezes. There is no flicker either.So is everything running well for you guys now?