I have some bug with rendering an Actor with an alpha channel in UE 5.1. I couldn’t find a similar problem and solutions. In all the scenes, I have the same framerate, but in the final video, the actor seems to delaminate into three layers when moving, like an echo. Moreover, everything is fine during the render on the preview, it appears in the final frames on the drive. It looks like the effect as it was in the old days when deinterlacing fields on the frame. Perhaps someone had a similar problem and someone found a solution? Many Thanks!
I just find solution. It was in motion blur settings - I had 0.6, and after I made 0.5 magic happens! Now it looks super sharp.