Power Supply swap didnt help me. Also, i've swapped graphic card (just for lulz), and my friend caught my lag 2 times, even if i stayed with my lags too...
Seems like a mystic drama to me.
My friend's PC is:
AMD Phenom II X4 955 Black Edition
DDR3 2Gb PC3-12800 1600MHz DIMM Kingston HyperX blu, KHX1600C9AD3B1/2G x2
AsRock 870 EXTREME3 (sadly, he was afraid to take same MB as i have..)
Nvidia GTS250
Due to the week business, ill try to get arctic silver 5 in nearest days and use it as you've told me few posts erlier.
It seems like after swaping graphic cards back as they were, solved his problem, but maybe he didnt caught those lags yet with hes own video card, just because he didnt use his pc too often... Can this happen because of the OS Windows 7? Because i've installed clear system for him.. Im paranoid, yes.