I learned through trial and error over the last week that when I had the full screen I was in 16:10 aspect ratio. Then I started working with other resolutions not knowing they were in 16:9 aspect ratios. I was trying to get the best quality picture on Youtube. Well, videos said I had to put 2560x1440 (2K/VP9 encoding) in my output scaled resolution, which was a 10:9 aspect ratio. That was why I was not getting full screen in my monitor. I thought my monitor was a 16:9 aspect ratio, but turns out to be a 16:10 ratio. So, me and maybe some others have choices to make. Am I going to make videos to fit my screen or have the best quality for Youtube. Videos told me if you want the best from Youtube to put your videos in 2K or VP9 encoding & 60 FPS, I must upload in 2560x1440 (16:9) output resolution & 60 FPS for the best Youtube videos.
Thanks Guys
QZX