Hope-UwU

Same problem here. At first I didn't think it was 15.7 driver that cause the issue. The encoder just didn't appear in compressor list of MSI After Burner.

I guess I'll roll back to 15.6 at the moment. Will wait to see the result of using AMF instead. :/

I'm using 15.6 driver and it's working fine on MSI AB. Try uninstall the driver with DDU (http://www.guru3d.com/files-details/display-driver-uninstaller-download.html) then install again.