2nd Gen Apple TV - movies start to stutter after approx 10 minutes

Hi - i've been using the 1st gen Apple TV without problems for years and just switched to the new model. I am running a wired network connected to an apple airport extreme router. Everything works fine with the old apple TV but when i try to watch local iTunes content with the new apple TV, the content start to stutter like crazy after approximately 10 to 15 minutes. When i plug in the old apple TV and try to play the same content, everything works like a charm. So it must be something related to the new model and has nothing to do with my setup, which works perfectly with the old device.

I've noted that the stutter seems to start as soon or shortly after the whole movie has been fully "cached" onto the device. When this happens i have to jump out of the movie, pick it again and then i can watch just fine until the whole movie has loaded again and the whole stuttering problem starts again.

This is driving me nuts. I've gone back to the old device until Apple can fix the problem. Does anyone have the same issues ?

Thanks
Marc