There were no apps running in background other than Epic Launcher. As far as I know, Epic Launcher after a while can become a resource hog, eating your precious CPU power and RAM without warning while doing absolutely nothing. Maybe I’ll do another test but with no Epic Launcher in the background. And maybe I’ll do the same test with other version of UE4.
ILQ 1 looks better for me 
bit darker but nothing you wouldnt tweak with post process volume. And building time. Honestly - the choice is easy