Don't Install Nougat If You're Worried About Problems
If you are having an outstanding experience on Android Marshmallow and the changes on board the Android Nougat update aren't overly impressive to you, think about waiting a few days past the day your update arrives.
The Samsung Galaxy S6 Nougat update is causing problems for many people. In particular, we're hearing about Wi-Fi issues, frustrating problems, and battery drain so severe that people are looking to drop back down to Marshmallow.
If you're worried about the Nougat update potentially causing issues on your phone, we recommend holding off for a few days until you can gather short-term and/or long-term feedback about your Android Nougat update's performance.
You'll also want to wait until you're ready to tackle Galaxy S6 Nougat problems. We've put together a list of the most common Galaxy Nougat issues and it's a great starting point.
If you're really worried, you might try and wait for Samsung and/or your carrier to roll out the first bug fix update for Nougat issues.