I have Toshiba Portege with Intel HD (OS Win7 64-bit) and there is a problem with playback of XviD AVI files. At random times it just pauses/freezes for a few seconds while subtitles and progress bar continues forward. It takes between 2 and 10 seconds for playback to resume. I tried KMPlayer and WMP, updated Intel HD drivers but nothing helped. CPU usage remains low. I read on another forum it might be GPU overheating, but any other movie formats work just fine. Do you have any suggestions?