Input lag on weekend is HUGE

Its been like this since launch, FIX THIS GODDAMN PROBLEM, ITS SO ANNOYING.

I play UT all week long and theres no lag at all, playing with 6ms.

But on weekends i still play with 6ms and feels like im playing with 250ms.

The thing is, if i go to ANY OTHER ONLINE MODE like Clubs or seasons, theres no lag, no input lag and nothing. I was playing Clubs 11vs11 full match and everything went smooth.. Then i went to play Champions and still had 6ms but felt like i had 250ms.