Update: 17.11.2016If you are having problems after trying out these settings or your game starts to buffer and lag quite a lot. Check out an updated version for the Best OBS Studio settings.
This post is part of the series me gathering up good guides for twitch streamers how to setup the stream and do all the nitty gritty things. In this video you can see: How to setup OBS for your Twitch channel.
Credits and +1 rep: For the MrJubbleTV for the good how to tutorial.