How about switching to a handwriting input instead of typing text with the virtual keyboard of your Samsung Galaxy Note 5? This tutorial explains how to enable the Direct Pen Input feature on the Samsung Galaxy Note 5 to help you get the most out of your S Pen.
Galaxy Note 5 S Pen Set Up
The Galaxy Note 5 pen works with most, if not all, text input fields including messaging, web-browsing, and note taking. Activate the direct pen input by going to Settings > S Pen > Direct pen input. Toggle the Direct pen input option On.
To use your S Pen, simply pull out your pen, and hover it over a text field. A blue T icon will appear. Tap on this icon to switch to the handwriting pad.