It seems to me that on some cars the better setup is:
Green
Green
Green
Red
Red
Yellow (4-9-13 instead of 4-4-17)
You have to try by yourself, apply the parts and see what you get, if you don't like your setup, reset and restart
At the time the Tuner Calculator was a good tool, the better setup was
Blue
Blue
Green
Red
Red
Red
But now, with same type of car in a race, is clearly a matter of OA score only, this explains why triple green is better than blue-blue-green.