The AI, which is often excellent, can be inconsistent; I've witnessed AI drivers struggle in the wet, and on one occasion during a rallycross event in Lohéac no-one made it past the first corner intact, proceeding to crawl around so I wound up winning a six lap race with two laps on the rest of the field.
Other issues are more problematic still. The dynamic racing line only works on some tracks, at many more disappearing completely or giving erroneous information. Skip to the end of qualifying having set a seemingly insurmountable time and your competitors will then become capable of inexplicable speed in your absence, ensuring the only way to get a good grid position is sitting through an entire session. Elsewhere, there's a fuzziness to the new race director that can frustrate, with penalties being handed out when you're nowhere near track limits or any of your competitors for reasons I've been unable to fathom. It's a pain in single-player races, and will definitely need attention if the multiplayer's hopes of enabling serious eSports - which see the introduction of an iRacing-like safety rating - is to take off.
...on launch day Project Cars 2 is every bit as spotty as its predecessor. It's a shame, as it obscures an otherwise remarkable achievement from Slightly Mad Studios.