I downloaded some subtitles for a movie i have. In subtitle workshop i tested the synchronization and i realized there was a gradual synch loss until after some minutes the subtitle were over a minute out of synch.
I tried several versions of the subtitles for the specific movie with the same result...
Finally i tried adding subtitles to another movie... again there were problems , this time they were less out of synch but still unusable.

Am i doing something wrong?...