+100 ping although usual 40-50 ping

I live in Austria nd play on the UK servers, but recently I got lag there. I used to get 40 ping. Now when I play after 5pm, I get pings between 110-300. Sometimes I even get these pings earlier like 3PM.

You might think that my internet screws up after some time but it doesn't. I can still play CF EU with my normal 40 ping. I only lag in CF NA.

On a different german forum, there are also a few people that are having the same problem lately.

The thing I think is interesting, is that I get high ping, and then from one game to the other I get a 100 ping. So there must be a problem with the server if I'm not right.