When playing with this controller, all the inputs are wrong. To ready a weapon I have to hold down the start button. It makes the game unplayable.

Tried updating the controller firmware, tried switching to japanese version, tried installing the capcom patch, tried installing the REbirth mod. Nothing seems to work. Has anyone else having problems with this controller? Have you found a fix?

This controller have multiple input mode.

Do you play in bluetooth or 2.4Ghz ?

IMO for better compatibility you have to force X-input, which would be 2.4 GHZ with the little dongle

Im using 2.5Ghz with the dongle. It doesnt seem to work with it

in that case, in the game try pressing "a" on your keyboard, it'll open a menu where you can freely rebind control on your controller and keyboard

That should do the trick hopefully