In addition to being the greatest racing driver in history (eventually), Kobernulf Monnur is also a test bed for the Project CARS Replay Enhancer. You can follow his driver journey from Zero to Hero at the YouTube playlist.
Because I'm in this for (mostly) fun, I'm using the difficulty sliders to create a dynamic difficulty. With success, I'll adjust them upward. With failure, I'll adjust them downward. In theory, this should create a sine wave of difficulty that homes in on somewhere where I can be challenged but still have fun.
This won't apply to one-off races, especially the long ones.
All career tier 8 (Kart) races, including Kart invitationals:
Historic GT4 M1 Procar Challenge Round 3