Hi, thanks for the reply's and sorry for taking so long to respond.
I had tried both media player and Kodi, but it happened with both, but I have managed to fix the problem.
To begin I noticed a slight flickering when there was a mostly dark scene, I initially thought it was the adaptive back-light setting on the television but it still happened after I'd turned it off. So I had a look at the menu settings on the Q10 and noticed that the Imprex engine was switched on, I turned it off and it fixed both the flickering and the problems with playback.
So if anyone is having the same problem, just turn off the Imprex engine, it seems unstable and the problem I was having must have been the engine crashing the system