Mouse click turbo, how to stop? (DeSmuME DS core)

Using the DeSmuME ds emulator. Playing Castlevania Dawn of Sorrow. I’m at a part where I need to use the stylist to touch and break some ice blocks. But when I click the mouse, I keep jumping in place because turbo is attached to the mouse/stylist action (mouse1).

I went to settings/input/controller options and also turbo options. But when I’m in the controller input options I try to set turbo to a different button like ‘T’ on the keyboard for instance, but it’s still mapped to Mouse1/left click as well.

Is there a way to get turbo off of the mouse?