TiVo Desktop Photos

I have TiVo Desktop Plus and I've noticed that photos I access from my PC are kind of fuzzy and not as large and detailed as they could be. Is there a way to increase the resolution of the Roamio Pro to allow for better looking photos?

Or do I need to find another way to display my PC photos on my non-smart TV? How's Apple TV in this regard?

TiVo Desktop Photos