Shapeoko Speed/Feed chart for tooling not 0.25" diameter

I’ve been using the recommended Speeds/Feeds from this wonderful chart:

My question to the community is there any prorating or adjustments to these recommendations for smaller tooling diameter?

A different sized endmill will have a different chipload, so the numbers ought to be different.

We do have some numbers here: — if you’re not disinclined towards commercial software, then G-wizard from the CNC Cookbook folks seems to be an excellent option.