The speed is much better during the day, but it is worse at night. I'll tell you a way. You can open two videos you want to watch, such as the first episode and the second episode of a TV series, and then pause, so that you can see the download bar moving slowly. During this time, you can do something else. After a while, you find that both episodes are over. You should watch one episode first, then don't close this page after watching it, just open the third episode and press pause.
I don't know if you understand!