Fast-forward in Retroarch

Hi, I've had my Deck since September 2022 and a problem I can't seem to be able to solve is that I can't use fast forward on any core, neither toggling nor holding a button.

I don't remember what, but I know I've tried a few things I found looking for a solution, but nothing worked. Maybe someone here has a trick I haven't sen yet? Thanks in advance.

Edit: Forgot to specify: It's the Steam version. I use its cloud saves often.