I’ve been having poor hatches in my NR360. I’ve been using it since May of last year with a break for winter- probably 10ish hatches total. I use it for quail mostly.
My hygrometer is off by about 20%, reading high. I’ve got two hygrometer/thermometer combos inside. The thermostat is off as well... I had it on 99.5 and had 10 out of 44 eggs hatch... got the thermometers and realized it was only 96 degrees in parts (close to the sides). I upped the temp for the next hatch but it still wasn’t great, so I’m still adjusting. The thermometer under the fan reads around 97.5, the one about halfway between middle and edge reads 100.3. Thermostat is currently set at 102.

I’ve also got an Incuview that I’m much happier with right now.