TB6560 and stepper 57BYGH633 (current settings?)

I have board TB6560 and stepper motors NEMA23 - 57BYGH633, connected and working.

My question is:

This motors are 3A and I don't know if I should leave current setting on board (75%) like it have came shipped or I should change it to 100%?

Motors are tried with 75% and working, but if they are 3A should I change settings to 100% to have more power?

Thank you.