I purchased my Switch less than a month ago and while I really like the console I've been having some very annoying controller and charging issues. I can't seem to sit more than 6-7 ft away from the Switch with my joy cons or I get serious input lag in the right joy-con. I have turned off all other bluetooth devices and moved the switch out from behind the TV so it is unobstructed and while it has lessened the input lag it still happens frequently enough to be disruptive. I also can't sit with my knees up, or my joy-con gets input lag. If my dog jumps up on my lap to sit with me his head can't be in front of the joy con or I get input lag. I have to move my furniture and sit closer to the television than I want to if I use the joy-cons optimally. It sucked, so I bought a pro controller.
The instructions suggested that you charge the Pro Controller before using it, so I tried doing that. It doesn't charge with the supplied charge cable plugged into the dock. It does charge when plugged directly into the switch's power adapter, meaning I can't play in docked mode while charging my controller. With it being a brand new controller I was not pleased with this so I called Nintendo, and initially they tried to convince me that I should be happy that it charges that way and not to worry that it doesn't work with the charging cable that came with it. Having payed over 100$ for it after taxes I was not happy with that answer. We did get it to charge from the USB port after messing about a bit. But now every time I want to charge my controller I have to move my tv, squeeze in behind my entertainment unit, unplug the Switch's power adapter from the wall and the Switch. Wait 30 seconds, plug it all back in, and then it works. It's a real pain in the ass for something that is nearly new.
I don't really think it's worth trying to return my switch at the store over the issue. Especially since my account, downloads and save files are already on it plus a I have a tempered glass screen protector on it that I payed too much for. I guess I could return the pro controller, but I'm not sure if it is the problem and I'd rather not return something that isn't defective. I'm assuming the problem is the dock or the power adapter, but I don't really know how to figure out which one is really the culprit. Hopefully I can get Nintendo to replace something and get it all to work like it should, but I don't know how easy that will be.
Anyway, sorry for the rant. The switch is the first home console I have bought in over 15 years, so I'm not overly pleased that I'm having issues with a brand new unit.