Do you use Sports Chrono for the lap times? If yes, don't you have to manually press a button each time you start a new lap to get the lap time? I've tried that, but it is quite difficult to hit the button just right every lap. (This is with the multi-function wheel)
Thats a yes to that but i dont see a big issue with it.
If your chasing 1/10 of a second per lap then it is an issue.
On a normal track you should be able to click with in ½ sec.
So i store my first lap as a reference to be able to save the map on SC for future use.
If it is not the first time on that track i take up the old reference lap and in the MDF i click new lap for every lap.
On the MDF or PCM you get a color indication on how you are doing (green, Yellow or Red)
(the "sensitivity" can be changed under option" also how exact the track should be recorded)
When i come home i import the files to race render and there i can go in depth on almost everything.
All the data comes from the car, i dont know if Harrys does the same thing.
(G force, brake/gas pedal position, steering angle, speed)
Also i like to be able to sit down and analyze my laps on Pc.
Thats why i dont like the Porsche app either....
*edit*
https://www.718forum.com/forum/porsche-718-motorsports-discussion/17772-sport-chrono-csv-file.html
Mor info on Race Render