IMG response

Wene

Ever since I got FiOS in late 2015, one of my TVs works while scrolling through the guide on a Hitatchi HDTV from 2007 with an HDMI connection. However, my Sylvainia TV from 2006 which has a 16:9 screen but can only connect to HD by component cables because there's no HDMI port, has bad lagging issues while scrolling through the guide and it only works when I set the graphics settings to 4:3. Is it a problem with the TV, or the box?

CRobGauth

What model STB is it?

Easy way to figure it out would be to swap the boxes around and see if the problem follows.