Install It If You're Dealing with Marshmallow Problems
If you're running into unfixable bugs/problems on your Galaxy Note 5, you might think about installing the Galaxy Note 5 Nougat update.
Many Galaxy Note 5 users continue to complain about Android 6.0.1 Marshmallow problems and issues with the current version of Android Nougat.
The Galaxy Note 5 Nougat update brings fixes for Marshmallow issues though the exact nature will depend on your model/carrier. And while you might see some fixes listed in your update's change log, there's a chance some won't be listed.
Downloading Android 7.0 Nougat could fix problems like severe battery battery life or underperforming first-party applications. The only way to know is to give Nougat a shot.
If you're already on Android Nougat and you're dealing with issues, there's a chance the latest Galaxy Note 5 Nougat build addresses your problem.
Remember, you can always flash another version of Android if Nougat fails to fix your problem. You'll need to use Odin in order to do so.