4 tuner motion blur?

When i watch sports via the Roku 3 I notice lag with image. It looks like a subtle trail. Switch back to my Fios DVR on same TV and it looks fine. I am recording at 720p. Is 720p 30 frames a sec?
Anyone else noticing this? I dont notice it as much on ipad app, but screen is much smaller than the tv.

-MM13

@MattMan13 When you say lag with the image - do you mean buffering? Or actual ‘artifacts’ or ‘breakups’ in the image? 720p video doesn’t have any issues as a whole, but it could be the OTA signal itself. Does the Fios DVR you use bring in OTA signals as well, or is this a cable channel?