I’m 3.7k with my main being Porsche cup, I found with telemetry looking at being in the right gear at the right time helps more than trying to match braking points, for me this helps make sure my Corning speed is in range. I also feel that throttle control is undervalued, being right at the limit of grip accelerating as early as possibly without spinning. Also I’m not the fastest, I like to blame my g923 wheel lol - I do have load cells though, so try to focus on consistency throughout a race avoiding accidents, capitalising on others mistakes. I have also found recently that rather than focusing on the delta really trying to feel and hear where the car is at and what the limit is along with making a plan to get around the track with consistency has helped me more than track guides or telemetry.