Project CARS 2 seems to be well optimized on the PC, reported to be running with a minimum of 80fps on Ultra settings in 4K on an NVIDIA Titan XP : r/pcgaming
Nvidia Disables SLI On GTX 1060 3GB Cards
Project Cars 2 vs GeForce GT 1030 vs GTX 1060 Sun/Rain/Snow (i7-4790K) - YouTube