I think your ratio is a subjective thing.
When I think of time-lapse photography, I picture a building going up.
One picture a day for six months may work for the most part but on day 77
they put aluminum siding up and covered the whole framing structure that was visible on day 76. I wish I took 2 or 3 pictures that day to give me more of a work in progress look.
If you followed my logic to this point (Worry; not many people do…)
go ahead and try it as you mentioned.
Who knows speeding the clip to 1200% could do it for certain subjects.
Probably not very much help here, but good luck.