Because the driver is unreliable, most professional capture communities (like speedrunners) recommend a specific hardware workaround rather than trying to "fix" the driver: Bypass the Driver (Best Solution)
: Very restrictive; they only work with specific 845GV-based boards. gv audio driver
The I-O DATA GV-USB2 is a popular analog-to-digital video capture device frequently used for digitizing VHS tapes or speedrunning retro games. Functionality: Because the driver is unreliable, most professional capture
Hardware not detected by BIOS/Windows. Fix: Because the driver is unreliable
The DVR software is looking for a specific audio channel index.