Internet connection = Lousy

My internet connection's kinda crazy these few days, since it's gonna be the end of the month and practically all the bandwith's already used up. Unlike back home, the internet's But the weird thing is, the connection only slows down (to the point where it's practically non-existent) between 8pm and 11pm. After 11pm, everything begins to load normally again. It's been like this for the past three to four days already.

Nowadays, to create more noise pollution and stop myself from being bored, I let about 4-5 YouTube videos run in the background so that when the lag hits, I still have crap to watch.