when i go to youtube when it streams sometimes it goes super fast and sometimes really slow why.?

Question

and how can i keep it fast

Answer 1

It depends on how fast your connection is. For example, if you're using a wireless network, it may go slow because a lot of people are using it. Also, there may be traffic on youtube.

Answer 2

It could be their traffic, or site modifications at any time. I strongly reccomend downloading free "TCP optimizer". Its self explanatory and makes a huge difference. Free "firefox" web browser is also much faster than Internet Explorer.