3D tv Panasonic ? ?

I've had a Panasonic 3d veria plasma tv for about a year got about 60 3D films all have worked well 3D has been amazing. I put lion king 3D in. I've seen it a few times on this tv. Always been great. But this time when ever the picture moved fast it pixelated around the fast object it now does this for all my 3D films plzzz help!! I have looked in settings made no difference. What have I done to muck it up

This only happens on 3D tv works well 3D is still amazing part from the sudden pixelating. I have tried new batteries in glasses. Still nothing tried swapping hdmi cable no difference. Don't see how it can suddenly muck up. Can't see the tv being at fault when everything else works . Since a year ago and I turned sharpness off I've had amazing 3D Any help would be great thank u
My mate who worked at comet. Won this at a staff due. I got it from here brand new. As she shortly left Lincolnshire to move up to Manchester and couldn't take it with her. I have all booklets etc but didn't seem to have a guarantee or anything. (can I pay for some kind of service)? Anything to get it working lost without my 3D lol