The Switch has been a pretty smashing success, both commercially and critically, but it isn't without its issues. One of those issues involves the Bluetooth connection for the left Joy-Con controller, which can cut out for five to six seconds at a time when being used wirelessly. Five to seconds is more than disruptive enough to ruin your gaming experience.
Nintendo finally released a statement on the issue, talking to Forbes, and here's how helpful it is:
At Nintendo, we take great pride in creating quality products and we want our consumers to have a positive experience. It is common with any new innovative consumer technology for consumers to have questions, and Nintendo Switch is no exception. There are no widespread technical problems, and all issues are being handled promptly, including the reports regarding the left Joy-Con Bluetooth connection. To best support our customers, we continuously update the online consumer support site and provide real-time answers to the questions we are receiving. We want our consumers to get up and running quickly to have fun with Nintendo Switch, and if anything falls short of this goal we encourage them to contact Nintendo’s Consumer Service team. For help with any hardware or software questions, please visit: http://support.nintendo.com.
According to Nintendo, the connection issue hasn't resulted in any more repair or replacement requests than is normal for new hardware, which has to be a frustrating statement for those affected. If you're having problems with your controller, call Nintendo at (855) 877-9099.