Problem with tracks need help

[Kakashi]

Hi guys, I'm having a bit of a problem here cause when I play online with my friend, though there are quite a few lag spikes... mostly we get smooth flying.

But when you check out the track afterwards this is what I get pretty much:

http://www.youtube.com/watch?v=KMZKk...ature=youtu.be

If you check the leader in the vid, you'll see that he is constantly making mini jumps and never really smooth.

This is gonna affect my gaming experience please help is there anything I can do??