Limits on "Input Actions Per Second"?

Hi, I'm making a music game with buttons in the "new" UI system, and as such I need the best possible response time from button press. (Which seems to be particularly challenging on Android).

In the EventSystem Game Object generated by default along with Canvas, I can set "Input Actions Per Second". As I understand I should set this to a high value in order to get response time from trigger event (Enter) to play of sound. My question is:

What limits this value, can anyone give any idea of what the implications could be of too high a value? And are there any general recommendations towards how high one could set that value without experience problems?