If I switch out of Direct mode on a analog input such as CD, then switch in a Dirac filter the menu will show a dirac filter has been selected and displays the name, but there is no delay as the filter switches in, and no change in sound. I then switch back to no curve, no delay, no change in sound. But in Roon, switching in the Dirac filter works as it should. There is a short 1 to 2 second delay as the Dirac filter switches in and out. This was not an issue in 705, it is new to 867.