Both myself and my friend are having massive issues with our Neon left Joy Con. He's sat a bit further away than me, at around 6ft from his dock, whereas I'm probably sat 2-3ft away from mine.
He bought a second set of grey-cons and uploaded a video of him testing the two out in the same conditions. The difference is night and day. With the grey one, he can put his dock inside a closed wooden entertainment centre and it still works perfectly, without a hiccup, the Neon one will not even connect to the system.
We've both been on the phone with Nintendo and are sending our Joy-Cons back. I think it's a bit of a piss take that I'll be without my Joy-Cons for 3-10 working days. I even offered to buy a new set, and have them refund me when they get mine. No dice. I understand they can't just send out new ones to everyone on good faith, but really, it's their shitty manufacturing and now I have to wait potentially 10 days to get my shit back that should've been working in the first place? Man, that sucks.
If the save for Zelda could be transferred off the system, I would 100% be returning my switch and waiting for all this bullshit to be sorted out.
Out of my friends, 6 of us bought them and only 2 of us have had no issues whatsoever. Some of us have bent docks, I and one other have a dodgy left con. My right Joy Con also makes a horrible grinding sound sometimes on the analog stick too. QC FTW.