It seems there’s an issue playing MQA on the iFi Diablo, with very frequent skips. I have also noticed that Roon switches between MQA and non-MQA while playing the song, and the iFi light goes from the standard yellow (for 16/44) to green (MQA). The light flickers in time with the skips, and so does the Signal path information in Roon.
I’ve captured a video of Roon playing an MQA song off Tidal, to give a better idea of what’s going on, here’s the link: