For the past few months I have encountered some lag. It think it's gotten worst lately. I'll be driving and let go of the gas to slow down and press on the pedal again to speed up but sometimes there's a 1 to 2 second delay before the car speeds up. This is especially dangerous when merging onto a freeway where the on ramp is also the off ramp. Only happens from a rolling stop. Never from a complete stop. I wonder if it's the transmission downshifting too slowly. I may try the reset by putting the car into offroad and driving it above 35mph.