I've also had this issue on a Now Tv stick. I was able to perform a manual update - Settings -> System -> System Update. After the update the version and build numbers hadn't changed nor had the last updated date. I'm assuming this is because it is just a minor patch for the specific issue. Hopefully it is now fixed. Time will tell.
@Anonymous User wrote:
@Simon-J Can we get an update on this? It's been far too long now.
I don't understand how this is still a problem after weeks and weeks...?
Don't hold your breath, it took over a year for Now TV to fix the picture freezing/stuttering/pixelating issue on the sports channels.
Although then they did give me generous discounts during it and several months free once it was fixed.
I’m also getting very frustrated with this. About 10 times today alone. And I also agree that the UX is much slower than the previous version. Come on NowTV. If you can’t fix this quickly please revert to the previous release which worked fine.