Mostly that it doesn’t work on Steam Deck. Hits memory limits IIRC.

It’s annoying all the articles are focusing on performance versus stock wine here when basically everyone uses Proton or a fork of it anyway, which has had fsync for years now that does similar performance uplift.

The story here should be that we’re getting fsync level performance with fewer bug and it can be upstreamed to wine. There is no relevant performance uplift for Proton users, but I guess performance gets clicks so that’s the story all the press are going with.