fyi…
“SimVibe doesn't support USB sound cards as specified on the SimVibe web page. THis is because most USB sound cards are VIRTUAL 5.1. In reality, they are often 2 channels and they try to fake 5.1 from this. Also, they usually don't have full 3D audio processing capability on board. Instead, they use a software driver emulator for what should be hardware. This results in increased CPU usage and a busier bus, none of which are optimal for game performance.”
http://www.isrtv.com/forums/topic/7323-simvibe-by-simxperience-reviewed-by-inside-sim-racing/?page=3“I highly discourage using a USB sound card. I think it gives me feedback or some $h!t cause sometimes I get noise feedback loop and my bass shakers go crazy. Anyway if you can use all PCI sound cards that's the best route. Hope this helps.”
https://www.reddit.com/r/simracing/comments/45mnal/sound_card_recommendation_for_buttkicker_pearl/ “The official word from SimXperience is that they don't support any USB cards so it is a matter of try at your own risk.”
http://www.isrtv.com/forums/topic/14631-using-external-true-51usb-sound-card/SimVibe Requirements;
http://simxperience.com/en-us/products/simvibe/simvibesoftware.aspxWith that you could try;
1) Buy a 5.1Ch USB Sound Card
2) Setup SimVibe. SimVibe has two modes of operation: Chassis and Extensions mode. An optimal Chassis configuration will require a 5.1 sound card (USB), four bass transducers and a four channel audio amplifier.
http://simxperience.com/Portals/0/Files/SimVibe/SimVibe%20Setup%20Guide.pdfhttp://simxperience.com/Portals/0/Files/SimVibe/SimVibe%20Tuning%20Guide.pdfhttps://www.youtube.com/watch?v=b5vWEYG3xHQ Lastly, see this post, the steps listed in this link should still be applicable to your current multiple USB sound-card issue.
https://rog.asus.com/forum/showthread.php?85128-Buried-and-impossible-Asus-%93Sound-Chipset-Bios-Mem...Good luck!