Thanks to Chew* and Infra from XS forum for advice. Whau, really helped me a bit. I got higher CPU clock (think +30-50 MHz than with all active cores) and I was shocked from CPU/NB! I set "only" 1.4V for CPU/NB and my system booted to windows with 3400 MHz CPU/NB. Again, this is with airooling system and ambients in room about 20 C !
Step by step I got up to...Look, no more talking
And quick superpi 1M
For fun,my max aircooled validation some time before at another ASUS board