60 fps vs. 50 fps (choppy)

Hey there,
just finished my project, delivered it in 50 fps, and realized it is choppy as it would have a framerate around 25-30fps. Is there a bug, or smtgh I forgot to set up? Rendered still pictures with dynamic-zoom, so it is not about the original framerate of the source file.
For debugging I made a 60fps version, which is smooth as expected, but normally the difference between 50-60 fps should not be noticeable like that. Changing project settings to 60 fps is no option this time, as the uncut video contains a lot of gopro video footage shot in 50fps.
50fps
https://drive.google.com/file/d/1D7-ea9 ... sp=sharing
60fps
https://drive.google.com/file/d/1P7cbXT ... sp=sharing
just finished my project, delivered it in 50 fps, and realized it is choppy as it would have a framerate around 25-30fps. Is there a bug, or smtgh I forgot to set up? Rendered still pictures with dynamic-zoom, so it is not about the original framerate of the source file.
For debugging I made a 60fps version, which is smooth as expected, but normally the difference between 50-60 fps should not be noticeable like that. Changing project settings to 60 fps is no option this time, as the uncut video contains a lot of gopro video footage shot in 50fps.
50fps
https://drive.google.com/file/d/1D7-ea9 ... sp=sharing
60fps
https://drive.google.com/file/d/1P7cbXT ... sp=sharing