@Joseph Mason that sluggishness is almost certainly a combination of both things — capacitive humidity sensors (which is what's on the sensors module) inherently have a slower response time than, say, temperature, especially when you're dealing with rapid RH swings like misting. The sensor element itself just takes time to equilibrate. That said, if there's any software averaging or low-pass filtering happening in the firmware on top of that, it'll compound the effect and make it feel worse than it actually is.
Worth digging into the firmware to see what averaging window is configured — if readings are being smoothed over multiple samples before they're reported, tightening that up will help noticeably. The AI Firmware Builder in the Club Dev Hub is honestly pretty good for exactly this kind of tweak if you want to describe what you're after and get something concrete to work with fast.
One practical thing that also helps in greenhouse setups is physical placement — if the module is in a low-airflow spot, the sensor housing itself creates a little microclimate that slows things down even more. Getting some airflow across it makes a bigger difference than most people expect.
