On the keyboard, mine goes straight to double tap speed also. It always had, I had forgotten about that part. I think its just a way that Dolphin sees the button press, since it's not analog, just on or off, that it can only be 100 or 0.
Using a controller, when going for the double tap, bring the stick all the way back to the center first. You can help this by increasing the dead zone a bit. Try setting it to 15
Also, try reinstalling your driver for the controller if you haven't done so already.
Using a controller, when going for the double tap, bring the stick all the way back to the center first. You can help this by increasing the dead zone a bit. Try setting it to 15
Also, try reinstalling your driver for the controller if you haven't done so already.