Game is unplayable since maintenance

I'm talking about team ranked games, dunno about the rest.

Every single game either I get freeze and lag out or somebody else. IF the game continues it is always VERY laggy with 1-2 players having red or yellow ping symbol (sometimes It's me, sometimes it isn't). Other people in my games also complained and I've never had problems before this maintenance + my ping is normal when I check it in lobby browser.

Is there something I can do to fix this on my end or just wait for a patch? It's been 3 days now....