The new Version of the Super Tuner has a new table called "Throttle Progressivity". It controls how much the throttle plate opens in relation to the throttle grip position. Don't mistake this for how fast it responds to the throttle grip. The response is the same but the position is controlled by percentage. It could give the illusion that it is effecting the responsiveness but it is not.
Here is what the table looks like.
Here is the description from the help file.
#1 is the actual RPM of the engine
#2 is the actual percentage of the throttle grip
In the example below if the engine is at 1250 RPM and the throttle grip was held at 40%, the throttle plate in the throttle body would only open to 28.5% (#3).
If 40% was entered in place of the 28.5% value the throttle plate would match the throttle grip position.
Note the throttle plate responds directly to the position of the throttle grip at all times. It doesn't "lag" behind, it is doing exactly what it is told to do. If all the columns under the throttle grip percentage were matched to the throttle grip percentage number, the throttle plate would follow the grip exactly giving no perceived "lag".