I have a Wii U and play with the mayflash adapters. I have run into issues using the adapter through a Wii motion plus controller, like holding down a button does not always register, and from time to time it will double press. That has huge impacts on game play, like using up double jumps instead of short hopping, not being able to charge smash attacks, and every now and then when I am really unlucky it will stutter while charging solar beam (stops registering the B button then sensing it again) and it'll fire the beam off. I'm going to borrow a friends normal wiimote and see if I run into the same issues.