Nitesdeath, R1CH is telling you the way to fix the problem. That kind of reaction is completely uncalled for.
The only way to "get rid of the black bars" is to stream in a 16:9 resolution, such as 1280x720. Your monitor is a 16:10 monitor. So if you want to play your game and stream it at a 16:9 resolution, you only have a couple options:
* Change the resolution of the game to a 16:9 resolution, which will do one of three things:
- distort the game on your monitor
- add black bars on your monitor
- show part of your desktop while the game is going on
or
* Stretch the 16:10 version of the game to 16:9 in OBS, distorting the picture on the stream.
Or you could stream at 16:10 and live with it.
If you want to stream with the game taking up the full screen on both your monitor and the stream, you have to own a 16:9 monitor.
Those are all the answers. If you refuse to acknowledge them, then there's nothing more to do here.