after first 2-3 minutes video starts to freeze every 10 seconds

problem only on grandpas like dm8000; dm500hd
but dm7020hd(also OE2.0) and dm900(OE2.5) don't have that freezes

after download problematic video to hdd it can be plaed without freezes
Codec: H264 -mpeg-4 avc (part 10) (h264)
Resolution: 1024x578
Frame rate: 25
Decoded format: Planar 4:2:0 YUV