alt Hacker News> NTSYNC isn't faster, it's more "correct".
It depends on what you're using now, though. If you're just using a vanilla wine/proton install, then NTSYNC should indeed be a lot faster as well. If you're using fsync or... I forget the name of the other one... then you many not see much in the way of perf improvements.
Esync was the other one. Basically either of those enabled (honestly probably both were) and it didn't hit a corner case with issues, NTSYNC is basically no benefit. (I personally would rather use NTSYNC)