I would strongly suggest checking out Raja@ASUS suggestions. If your cooler is fairly large and heavy, you could try temporarily placing your PC on its side with the motherboard horizontal facing up. If that works it's time to reinforce your cooler backplate etc. etc.
As far as timings are concerned start in the neighborhood of 2300 MHz and19.19.19. However I am not sure if that is the issue.
NAME THE SANDWICH: – White Bread, Lots of Baloney, Russian dressing and served with a small pickle.?
Intel Core i7 8700K @5.1 Stable Delidded
Asus Maximus X Code
16 GB G skill TridentZ DDR4 4266 (PC4 34100)
Corsair HX1000i digital
EVGA 1070 GTX TiSuperclocked+
Samsung NVMe SSD 960 pro M. 2
Samsung 860 Pro
Watercooled with EK block radiator fans etc.