If you created your overlays to become 1080p, you’ll wish to set that as the base resolution. Output resolution is what you would like the stream resolution being. This would be the output to Twitch, YouTube, Facebook Gaming, and many others. If you'd like to only stream at 720p, 60fps, http://whatissoftwaretesting08529.look4blog.com/36582349/the-2-minute-rule-for-what-does-a-software-engineer-do