Ok. No response for a while (not angry or anything) so I've decided 1h ago to reinstall Windows.
Guess what: all seems to work fine
I mean Command Center works ok, same as other drivers.
Now I will be watching for any those types of lags, but right now my CPU usage is 3% when Norton is downloading updates and Steam couple of games
So big THANK YOU ALL
Will create new post or reopen this one if possible when I find any problems that are pretty much similar.