@Flood_Master we want to achieve the highest quality encoding possible, this requires more CPU power on the users end. Pending on which exact AMD Athlon x2 dual-core processor you have, you can only stream mobile, or not at all with version 20.2.0 and higher.
@markhambaptist could you install version 20.2.43 (
http://www.livestream.com/forum/showthread.php?t=7604) and see if it still gives the same problem, there was a known problem with version 20.2.0 not listing all the capture devices.