OK, Korg driver installed
Gig Performer does not see it.
Right click the driver and select update driver…
Select Browse my computer. Then Let me pick from list of available drivers
Instead of the Korg driver choose USB Audio Device
Now the driver does not have the Korg name…and GP sees it every time.
Again, I don’t know if this applies to your problem but it works at least for the nanoKontrol2