If you have recently updated your Livestream Studio version to 6.35.70 you may have noticed you lost the ability to see or utilize some streaming qualities.
This issues is a result of a minimum driver requirement to use NVIDIA Video Codec SDK 12.1
Please update your NVIDIA graphics drivers to version 531.61 or higher to resolve this issue.
As a reminder for all HD550/51/4K variants, the recommended drivers can be found here Driver and Software Versions