I'm playing on a projector at the mo (I don't actually have a TV, haha) and don't set it up properly... in fact, I'm finding it hard to get the correct focus at the moment for some reason, it's a full 1080p projector (although I am using it on a wall and not a screen) but it is a little old now so maybe it's just not ageing well..?
It's ok for most games but sometimes makes it hard to spot enemies on games like Battlefront and CoD!
It used to be great though, a really clear picture, but for some reason I just can't quite get the focus right lately.