Hi — Most of the content is streamed and the players embedded so file sizes really are not a factor in page rendering or playback, like for watching YouTube videos. It will be mostly affected by bandwidth and Internet connection issues rather than anything having to do with your computer, system or browser. If it were a browser issue, you’d see that as a piece of content not appearing at all, probably with a notation about needing to update Flash or something.
A couple of possible suggestions, though:
If you have any other questions or comments, tweet us and we’ll try to help.