X-Arcade game scrolling within BigBox

[TwilightHitman]

Has anyone noticed scrolling issues with the X-Arcade stick? When I hold the down or up direction on the stick, it will only scroll one game at a time. This can be quite tedious and time consuming. However if I hold down up or down on my keyboard, it will scroll through games continuously. I'm connected to the PC via PS/2 connection. It's currently in Mode1. 

Is there something I'm missing?

I don't see any sort of additional options within Keyboard Mapping to address this.

Should I look for a PS/2 to USB adapter?

Thanks