Thats weird @Leeghoofd, in my test kaby IMC is much better than Skylake, only some timing is different than on skylake. And i notice voltage too, on Skylake my kit only topped at 1.8678v with vtt 0.9375v, and with kaby lake i can run 1.9008v with vtt 0.9375v, testing on 32M waza with my best skylake IMC only topped at 1960mhz 12-11-11 tight 1.8678v, with kaby i can run 1988 12-11-11 tight 1.9008v which is always unstable/blue screen voltage on Skylake. I noticed too 2 DIMM board can have much higher voltage tolerance on some B-Die Kit.