What you are referring to is finding the most appropriate arrow spine(stiffness) and foc(rest/balance point) which essentially ensures the fewest shaft oscillations and least sporadic arrow flight.
Because stiffer(overspined) arrows are better suited to accept higher levels of energy transfer generated by compound bows, overspined arrows perform/fly much more efficiently than underspined arrows. Given the information you provided, you are likely underspined but to know for sure, we would have to know exactly what arrow you are shooting.
