This depends on your technique. As a rule of thumb, the slower your swing speed, the greater loft you’ll need on your driver. This is because slow swing speeds usually produce slow ball speeds, which don’t experience as much lift as balls travelling at higher speeds, resulting in shorter shots. A greater loft encourages the ball to fly and roll further, counteracting any loss of power you may experience due to having a slower-than-average swing. If you have a slow swing speed, it could be worth trying a well-lofted golf driver.