[SOLVED] Strange Video Playback Problem

[Skywatch]

Today I reinstalled an old xbian pi2 from scratch.

All went well and it's all back and running with one odd problem which I will try to explain as best I can.

After getting the sound to work I played a video (HDMI out) from the server and the picture was glitching and pixelated with chroma issues as well. I went through all the menu options for hours and still couldn't find the cure.

Then I tried to play from a different server and that was OK.

I rebooted the first server and the issue remained. I then powered off the first server for 10 mins and back on, the problem still is there.

But here is the really strange bit that I do not understand.

If I play a video from the first server with the bad video picture and then whilst it is playing I start the same video on the laptop, the xbian picture becomes normal (and it is always good on the laptop so not the server per se).

From this moment I can stop the laptop stream, skip around the video in kodi and all is well. But if I stop it and start it again (or another file) the problem is back.

This has got me really puzzled as to what could be happening here?

Any ideas and I would be very pleased to hear about them!