Did a clean install and now everything is as supposed to be! (=60Hz)
I just installed Mojave 10.14.5 on my dell 7559 laptop. (i7 6700hq, 16gb, gtx 960m+intel hd 530, 1 tb hdd+ 128gb ssd, bios 1.2.9, 4k touch screen)
Everything seems to be working apart from the fact that the...