Tried that approach, it makes no difference. Also freezes in the menu. I can switch right or left only over a few emulators before it stops, sometimes even in the transition.
It’s definitely not about saving the configuration at the welcome screen, that happens after that.
The controller is a XBOX 360 wireless controller, just for curiosity I tried it with another vanilla 3.0 beta 4 only with configuring the keyboard (Logitech K400) instead and get the same result, goes successfully through the configuration, then freezes in the menu after a couple of seconds, around 10-15.