Phil,
In addition to increasing the slop of the GHx pins (increased gate resistor), the dead time would also need to be increased. Correct?
The dead time can be increased using the DTC resistor of the DRV8303 and it can be changed using the parameter in the InstaSpin-FOC motion software. Does the InstaSpin-FOC motion software need to control the dead time? Does it matter to the InstaSpin-FOC motion software how the dead time is added?