Actually I'm not even sure if there's anything I could do to compensate for the refresh rate. I just know that when I overlay the video with the throttle position and RPM it doesn't align with the sound. The only place I can see to change settings for the OBD Kiwi in Harry's Laptimer is shown below:
Do you guys have the same settings?
An example of the refresh rate I was talking about earlier is shown here: