All presets have a little bit of noise, some more than the others. #3910 additionally has this funny mod patern because obviously the H8000FW cannot recognize an audio signal from noise.
The thing that worries me most is that switching to 96 KHz this noise becomes unbearable. So, my question is simple: Is this behaviour normal, yes or no? You guys have plenty of units over there. Just switch sampling rates. Do you notice that the background noise is increase?