my TiVo box has again started stopping and starting on playback after having a new box sent last year. I have the feeling the replacement was a reconditioned one as it still had someone else’s Netflix login details I had to remove.
That'll be 2 different issues, neither of which are likely to be cleared by remote resets.
Live TV is fed to your box as "broadcast" signals, and if the levels are out, this will manifest as picture breakup & pixellation. One reboot is a wise precaution, but if symptoms persist then there's an underlying problem.
OnDemand is carried over the internet, if you have poor connectivity then buffering/stuttering may result but not necessarily pixellation.
If you have hard drive problems, this would affect anything being played from the HDD - recorded, delayed and paused TV. But not OnDemand or live programmes.
I'm a Very Insightful Person, I'm here to share knowledge, I don't work for Virgin Media. Learn more
Have I helped? Click Mark as Helpful Answer or use Kudos to say thanks