Motorstorm online issues?

I am a big fan of Motorstorm both the on and offline part.

I bought the game at its release and it worked just fine. The beautiful graphics and physics was the same offline and when playing with my friends on-line. Recently, when playing on-line, the competitors cars act very strange, they disappear, jump in the air etc. It really ruins the game.

Is this how it has become over time? I am sure it was not like this when the game was released.

i had this for a while but it died out.

make sure ur internet connection is strong.