Heatspreader I removed because they have otherwise "cuddled" with my Genesis cooler.
Memory was equal erkanntt, 2 XMP profiles here. Timings I still entered manually.
Now the hammer: with the 2400er clocking the more stringent timing of 10-11-11-21-1T with 1.55V (DramV) were possible for me.
Testing with Prime95 -Blend and HCI Memtest.
However, in my system an increase in the System Agents and IMC were necessary because otherwise the Devils Canyon 4790k controler not quite come along, the poorest .. ;-)
Summary: an absolutely brutal good Ramsatz with first-class values and voltages. My recommendation *****