Rendering every Nth frame

[Alexx31]

Hello,
I have a special task:
I have to set up an extreme slowly simulation (in order to have control over substep behaviour with tyflow, which can only cache at full frames), but to render it out much faster then with motion blur.
My Idea is to render only every 4th frame and to increase the motionblur.
- Do I assume right, that this will give me a „natural“ looking fast rendering of normal speed? (just to make sure I am not doing a wrong concept)
- Can I renumber the frames, so that frame 1 is named frame1, frame 4 is named frame2 and frame 8 is named frame3 etc?

Thanks

[hermit.crab]

- Do I assume right, that this will give me a „natural“ looking fast rendering of normal speed? (just to make sure I am not doing a wrong concept)

Not sure, but you could test it out with a simpler scene.

- Can I renumber the frames, so that frame 1 is named frame1, frame 4 is named frame2 and frame 8 is named frame3 etc?

Maybe setting a custom FPS would help in that regard since it would eliminate the need for renaming and still yield the "every nth frame" output. Otherwise, there should be a freeware capable of mass-renaming with specific parameters.