Here's a 720p at Medium on a 460M. It's tough to spot in the video, but when I peek around the corner here:
In the freeze-frame of the video, you can also see some of the texture distortion effects. Observe the Recon's legs and you'll see a telltale distortion that appears to make his legs appear baggier than normal.
Look at the door frame.
The top part is crisp and clean. The bottom part is fuzzy.
A good telltale for a cloaked Ghost is when any vertical texture or object appears to be rippling, from my point of view. Once there's no textures to compare to, I'll lose track of the Recon, but as long as they're against a vertical texture, you'll notice tearing effects.