From the email;
The gain in performance varies wildly depending on the application in question and the user's hardware. For some games NT synchronization is not a bottleneck and no change can be observed, but for others frame rate improvements of 50 to 150 percent are not atypical. The following table lists frame rate measurements from a variety of games on a variety of hardware, taken by users Dmitry Skvortsov, FuzzyQuils, OnMars, and myself:
| Game | Upstream | ntsync | Improvement |
|---|---|---|---|
| Anger Foot | 69 | 99 | 43% |
| Call of Juarez | 99.8 | 224.1 | 125% |
| Dirt 3 | 110.6 | 860.7 | 678% |
| Forza Horizon | 108 | 160 | 48% |
| Lara Croft: Temple of Osiris | 141 | 326 | 131% |
| Metro 2033 | 164.4 | 199.2 | 21% |
| Resident Evil 2 | 26 | 77 | 196% |
| The Crew | 26 | 51 | 96% |
| Tiny Tina's Wonderlands | 130 | 360 | 177% |
| Total War Saga: Troy | 109 | 146 | 35% |
The whole thing is worth a read to see how this works, but jumps from 110 fps to 860 fps is just insane. The wine team has done some really great shit with this.