The Joy Cons that came with my Switch did not work at all out of the box, so I had to send them in for a repair/replacement.
Since then I have not noticed any drifting issues. Though I would peg my total playtime since I have had my Switch to somewhere between 100-150 hours.
http://www.youtube.com/watch?v=F1gWECYYOSo
Please Watch/Share this video so it gets shown in Hollywood.







