We are trying to toggle a GPIO (PE_05, LED3) as fast as possible on the EVAL-CM408-EZBRD. We "only" achieve a pulse of 125ns with dual toggle, and a clock output rate of about 4MHz for multiple toggles. The core is running at 240MHz, and the SCLK is running at 96MHz. This seems to be quite slow to us. Is there any way to improve this rate?