Start playing a MKV movie, after 3-5mins it will pause and then returns to the folder

G’day,
Just got a WD TV Live SMP, upgraded the firmware to 1.12.14 connected to my QNAP NAS via NFS and wireless.
I start playing a MKV movie, after 3-5mins it will pause and then returns to the folder. I have tried
a number of MKV’s that I have.
Anyone got any suggestions how to resolve this.
Matt

Check the codes for the MKV file to see if is compatible with the unit.

What about a different type of file? does the same?

The codes seem fine, does play, think could be related to traffic on wifi network.

once everyone went to bed last night I watched a movie without issue