For your "Live Gamer Ultra", I see nothing under required specs that AMD/Ryzen is supported? Is this true?

We strongly recommended using Intel chipset if you are using our GC553 to ensure its best performance.

We have confirmed there’s a compatibility issue when you are using B350 (Ryzen 7 1700, MSI B350M Mortar). In case you encounter the compatibility issue when you are using a USB host controller other than the Intel USB host controller, please contact us: TechnicalSupport@avermedia.com along with the HWiNFO.

How to get the logfile from HWiNFO:

Connect your GC553.

Please install HWiNFO (https://www.hwinfo.com/download/), and send create Logfile to us:

*create logfile> XML

*Tutorial video*

https://www.youtube.com/watch?v=H7k9Xq04lyo&t=11s