so anyway ive been fighting propwash on my 4inch build for like three weeks now and someone in another thread told me to make sure RPM filter is properly configured because i was basically running it wrong. went in and enabled DSHOT600, bidirectional dshot is on, and i can see the eRPM data in the blackbox so i know its working

but heres the thing ? it actually feels worse now. more jello in the video and the quad just feels kind of mushy in fast direction changes. betaflight 4.4 by the way. i did lower my filtering after enabling it because i read you're supposed to since RPM filter does a lot of the heavy lifting

did i lower it too much maybe? i basically just hit the "low noise" preset and then backed off dynamic notch a bit. not sure if i should have done that or if im chasing my tail here. motors are running cooler at least which i guess means somethings working

the cooler motors thing is actually a good sign, means the RPM filter is doing its job on the noise. the mushiness is almost definitely a PID issue not a filter issue ? when you clean up the noise that much sometimes it exposes how your PIDs were compensating for it. you might need to bump up P and D a bit and retune from there. blackbox is really the only way to diagnose this properly, look at the gyro vs setpoint traces and see whats actually happening

also what props are you on? 4inch can be weirdly sensitive to prop choice for propwash

honestly the "low noise" preset in 4.4 is pretty aggressive with the filtering reduction, i made the same mistake. try going back to the defaults and just enabling RPM filter on top of that without touching anything else first. get a baseline and then tune from there. jumping straight to a preset after a big config change makes it hard to know what actually caused what