Thanks for your reply. XMP is enabled. PBO has been enabled at some point. Right now it is at default BIOS. I've tweaked iit a lot since building 3 years ago but it never performed like I thought it should. I'm not interested in over the top type clocking, just stable, optimized performance.
The ram is;
Mushkin Redline Black – DDR4 DRAM – 64GB (2x32GB) UDIMM Memory Kit – 3600MHz (PC4-28800) CL-18 – 288-pin 1.35V Desktop RAM – Non-ECC – Dual-Channel – FrostByte Black Heatsink – (MRC4U360JNNM32GX2)
Thanks