Yep, though only in informal contexts. When I'm in a class, or giving a presentation, it doesn't happen, but if it's a friendly lunch it does.
My theory is that it's because of all the extra processing I have to do in order to try to process and mimic all the non-verbal and contextual cues around me. NT's do this intuitively, but I can't so I do it cognitively. I've praticed it enough that I can mostly do it without actively thinking about it, like driving a car, but it's still using up some of my brainpower.
Now, with one person, it's alright. With two people, it gets harder, since not only do I have to keep track of each individual, I also have to keep track of how they react to each other as well. With every additional person I try to keep track of, it requires more processing power, and eventually I can't keep up. It's like asking a computer to do many complicated tasks at once- it starts to lag. And when a computer lags, other programs start to go slower. I can't process all the input and output coming at me - I start hearing every sound, sights get very vivid, normal autie stuff.
There's a few senses that people tend to forget about, since they're so automatic. We actually have two additional, non-ESP senses, our sense of balance and our sense of where bits of us are relative to the other bits i.e. even when you close your eyes, you can still touch your nose without thinking, unless you are very drunk.
Now, if sight and hearing starts to go wonky when I'm starting to over-process, why not those two senses? If you started to overprocess the information coming from the structure that senses balance (A pocket of liquid in your inner ear that works like a bubble level ), you'd start to feel dizzy and light-headed, as if you done something to muck with the sense like spinning around in a circle.
It's just a theory, but if it's right then yes, it is an autie thing.