I just spent about an hour in Medium, and several times, one of the controllers would stop tracking right, and start spiraling around my hand for a few seconds, then pop back to normal. Pretty sure I was well within the view of both cameras, and it's only happened to me in Medium so far. If I wasn't so sleepy, I'd go back in an see if it replicates. I'll update if when I can, whether it replicates or not.
I'm just wondering if anyone else has experienced this?