Interlaced is still broken, I uploaded interlace_test.adf to the zone, very good test case.
Looks like vsync works correct already. Don't know about g-sync, but freesync is pretty much automatic: disable vsnyc, go fullscreen and it just works.
The old strange bug is still there: if I start in windowed mode it detects 60Hz even if it's at 50. If I work around with
assume_refresh_rate=50
emulation is fully synced to refresh rate. Haven't tested low latency vsync yet.
good news: JIT compiler seems to work
bad news: no joy with .hdf files even with
hard_drive_x_controller=ide
-> "Not a dos disk" configured drive geometry looks ok to me and afaik it has nothing to do with uae boot rom, so it should theoretically work.