Here's an experiment I ran messing with fast zoom and optical flow cadence (in the coherence tab, RAFT and flow factor 6).
Seems like you would usually want a flow factor of more than 1 in most circumstances since it helps a lot with temporal consistency.
https://www.youtube.com/watch?v=oRNCK_0w2ucI'm not gonna be upscaling this particular one but I do have plans for another full length video after making some more tweaks.