Cemu

I'm using a GCN wired controller with the Mayflash USB adapter. Windows 10. Cemu 1.22.2

When playing BotW the game will occasionally call for a short rumble. But the controller is often made to rumble for 10 seconds, if not longer. Some short rumbles do work correctly, but perhaps half do not.

In input settings, Emulated Controller is set to Wii U Pro Controller (Wii U Classic Controller doesn't work at all). Under the Controller Settings, rumble can be set to any percentage, which always gives the same 1 second rumble burst, even at zero percent. Setting the rumble to zero doesn't prevent any rumbling.