Problem

When a UR-C audio interface (UR22C, UR44C, UR816C) is being used in SuperSpeed (USB 3.1 Gen1) mode, audio dropouts may occur depending on the system's USB host controller.

Background

The dropouts seem to be related to the following USB controllers when the UR-C interface is being used in SuperSpeed (USB 3.1 Gen1) mode:

ASMedia USB host controllers with Windows 10 standard USB driver by Microsoft
AMD X470 / X370 chipset

In these cases, the Yamaha Steinberg USB Driver control panel typically gives out an 'USB Signal Error' warning.

Solution #1

Switch to High-Speed (USB 2.0) mode in the Yamaha Steinberg USB Driver control panel.

If High-Speed (USB 2.0) mode is being used, the data transfer rate will be decreased, but this will not affect the functionality of the UR-C audio interfaces. Other performance values such as latency will not change.

control panel on Windows

control panel on macOS

Solution #2

If your audio device is connected to an ASMedia USB host controller and the Windows 10 standard USB driver by Microsoft is being used, switch to the standard ASMedia driver.

How to verify the driver

Open Device Manager.
Select 'Devices by connection' from the 'View' menu.
Look for the USB host controller device to which your audio interface is connected.
Right-click on the USB host controller and select 'Properties' from the contextual menu popping up.
Select the 'Driver' tab.
The detail 'Driver Provider' shows the driver's origin.

Microsoft standard USB driver is being used

ASMedia driver is being used

On the 'Details' tab, select 'Hardware Ids'.
Verify if the vendor ID of the PCI device is ASMedia (PCI\VEN_1B21).