Hi giggiera,
I assume that it is the same with any native Cinema 4D render.
I would need a scene file to answer appropriately; anything else is guessing, which is not really professional.
(Edit: With not professional, I mean that dumping many questions and guesses into the forum would be unprofessional from my side. I find platforms with that kind of stuff in it super hard to read, challenging to follow, and wasting everyone’s time. Instead, I offer to look at the file, and when I get a reproducible solution, I post the answer and perhaps some alternatives. Besides, I started a few years ago to make 60-second clips, “running” through a setup, to visualize the setup. (Nearly 1300 clips by now.) It seems to work. Otherwise, the communication might be extended. Sorry, it was never meant to characterize nor evaluate the question or the one who asks itself. Not at all! Really sorry. Well, now I took a lot of time. I hope it is OK./edit)
However, let me guess one time: Your Editor window is set up to show things in “real-Time”, which means it skips frames.
https://help.maxon.net/us/index.html#10643
It needs the same amount of frames, but it ignores working on most of the 75 frames. With that, it looks like it is slower regarding this effect.
Set it to all frames, and if that changes things, you know what the reason was.
Let me know if that is the core of the problem.
If not, I need a scene file. I believe that it is a Cinema4D question; otherwise, this should be handled in the Redshift 3D forum.
Cheers