Technomate TM Twin OE
Open PLI 4D
External HDD = Toshiba 1 Terrabyte

I have a constant internet speed of almost 29mbs.
However, some of my recordings are failing because when I am watching a recording I find that the recording froze at a certain point.
This could be at any time of the recordings.
Sometimes, but not very often I just get a black recorded screen.
On some occasions (on a one hour recording) I find that there are only 50 minutes recorded.
The recordings are set to record 3 minutes before & 5 minutes after a programme.
Would anyone know a fix for this ss I find it strange with a good internet speed?