Looks like someone else is having this issue too. There has to be many, many Roon users with KEF speakers that are in the same boat.
“I have been experiencing this on my KEF LS50 w2 speakers for months, and it’s infuriating. Zero crackles or pops or distortion of any kind when using other non-Roon inputs, including while streaming Tidal and/or Qobuz through the native KEF app.”
Really hoping Roon can address this.