GT20E plays with a lot of breaks

Hi,
I have a GT20E (3D Plasma) and managed to install Serviio 0.6.2 on Win7. The TV is unrecognized in Serviio, so I took the Panasonic Viera Profile manually. But unfortunately, a lot of movies produce a "data not readable"-error (avis, the same video do play on the TV, when copied to a USB-Stick before). And some videos are playing and stopping for a second and then continue to play and stop again. I had an XVID-Avi with that phenomenon. The network connection is ok (100 MBit, cable).
Is there another profile available for the GT20E? Or what can I do?
I have a GT20E (3D Plasma) and managed to install Serviio 0.6.2 on Win7. The TV is unrecognized in Serviio, so I took the Panasonic Viera Profile manually. But unfortunately, a lot of movies produce a "data not readable"-error (avis, the same video do play on the TV, when copied to a USB-Stick before). And some videos are playing and stopping for a second and then continue to play and stop again. I had an XVID-Avi with that phenomenon. The network connection is ok (100 MBit, cable).
Is there another profile available for the GT20E? Or what can I do?