As with the other guys, let me reiterate that the problem of higher-latency is not isolated to gaming. We just notice it because we are gaming.
What we experience:
before 5pm: sub200ms ping to EU
after 5pm: 260-300ms ping to EU. This has in my experience included in frame drops ingame, probably due to some lost packets along the way.
The pings above are seen as above in both gaming and cmd prompt -> ping.