Norsdscheife in AC, dropped times by 30 seconds in 2 nights, just so much better at hitting lines, using track cambers, and carrying better speed everywhere. I have hundreds of laps on Nords in 2d, so my improvements had nothing to do with learning the track. You do need a very good pc with very possibly upgraded cooling. My watercooled 8700 had to be upgraded to better fans in a push/pull setup, now runs cooler at max than previously at near idle. This is key to performance as today's machines will throttle down to protect themselves as temps rise, which hits framerates hard. Ever notice framerates dropping, check temps.