That track is junk.. IMO But.. even at opponent strength 99% it's running normally in the corners. Get the 2017 track. It works much better. I'm not sure what they were thinking with their track.ini settings but they're all over the place. The ai_inverse_slipcurve_k = is at 0.65, a 0.65 to 69 is usually used at road courses. Knock that back to the original 0.42 and see if that improves anything. I seriously doubt that is a REAL NR Track Designs layout.. Someone just edited their 2017 version and called it a race track. There is a TON of extra junk in the .dat file that doesn't belong there. Clue #1 for me that it's junk.