Well, l was kind of thinking it had something to do with the camera based motion blur effect, but it'll show up even if you're creeping very slowly, and I mean VERY slowly. I don't have enough knowledge on the subject to figure out what it is.
Has anyone else noticed this? I'm playing on a 24" 1080p display, and sitting very close. Not sure how noticeable it is if you're sitting further away.
I'd say the best place to investigate would be the indoor capture the flag map with multiple floors and interconnecting bridges. The hallways have white panels on the walls. The line between the panels is dark. If you look it that line closely while standing still, it will be sharp. Edge side to side and you'll see aliasing appear and begin to crawl.