Football Game With Choppy Picture

What is it with the ABC football games? I'm seeing a lot of choppiness in the picture, almost like I'm seeing every other frame of a film rather than a live football game.

It's not every game. I watched parts of a couple other games and they were normal. But the Rose Bowl -- like another game I saw a couple weeks ago -- has this choppy production. It's very distracting and troubling to my eye.

It's a good game. But if I were prone to migraines, I'd have one by now!