Yes, something weird going on with MSI's mortar. Now running with 1.1 bios which allows 3000MHz memory (1.2 and 1.3 worked with 3200MHz ) but at least I can OC the processor fine. Still if I try to do all OC on bios, memory speed will usually be defaulted after reboot to 2133MHz...but CPU OC clock stays. Now I have set memory OC to 3000MHz on bios and CPU is just around 3,2GHz or 3GHz, then I set CPU OC on Windows/RyzenMaster to 3,7GHz which doesn't require reboot and now it works with 3,7GHz/3000MHz...
Have ticket open with MSI, hope they find something out. Tried to build a little bit different looking rig this time and MSI had the only white mobo + they had good memory support, but feeling little bit disappointed now.