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Taken from a post by NotFastEnuf from MMW community

I really only have my 4in to test on currently, and I’m running pass 1 at 90hz, pass 2 at 140hz, and a first order D filter at 70hz or I have also tried a second order D filter at 120hz. I’ve been slowly eeking it towards a typical betaflight setup that I would run if not using the dynamic notch and it’s still clean.

I think it’s really build dependent to be honest and we just need to collect more data and experience. Start with the 2 gyro passes both at 90, and the second order D at 100… Then go from there. If it’s clean bump D 2nd up to 120. Still clean then start pushing the second gyro pass back. Still clean then drop from 2nd order D to a first order but lower the cut to 70hz and then push that back but no further than 120hz.

That is sort of the routine I’m following now but as we know filtering is a trade off. It will be a whole new game when I make D split into 2 passes.

Again consider your build and your goals. If you want no propwash and you’re always gonna run good props vs a tank you can bounce off the ground that will tolerate all sorts of nonsense.

A point of reference … I noticed Vanover’s filters in raceflight during a YouTube video he was featured in … 2 gyro passes 100 and 150hz, and a 2nd order D at 120hz. Keep in mind that’s a pro race rig that may be more focused on tolerating clipping a gate, bending a prop, but needing to finish a race anyway.

Overall, I think we are close to the big boys now with our filter behavior… Gone are the days of “what oddness works for silverware” … And here are the days of what works for quadcopters in general. Makes life easier.

(…for brushless) I like 90/140 gyro and D 2nd at 120 too. That flies very well on just about everything I’ve tried it on.