I’m having the same issue in Cubase 11 Pro.
Only just started working on video stuff and I really can’t have this happening, as I will need to work back and forth with the Director until he is happy!
So, been working on a 1 minute sizzle which I have written the music for . Synced it up perfectly with Cubase and mixed the whole thing down as a video, after the export, the vid and music/fx are out of sync, the stabs don’t come exactly as they were before the export, the music is slightly off by a few frames but enough to tell.
Really need to find a solution to this please if anyone has a fix for this I would be grateful.
Thanks in advance.