Macbook Pro on OS X 10.11.6; 2.8 GHz Intel Core 2 Duo; 8 Gig RAM; 1T SSD.
Fyi, doesn’t seem to make a difference what machine. Trying to run Roon off another more powerful machine that runs on OS X 10.13.6 but has a 500 gig SSD does not seem to make a difference.
I doubt it’s processing, as you suspect. I also used to think it’s processing, esp when playing 196/24 audio. Just to test, I was recently surprised to get the same stuttering when playing mp3! If it was processing I’d get the same issues playing the same music say on Vox or Pure Music but I don’t.
what DSP settings are you getting dropouts in. I have antipodes audio dx latest version, i can have a cutout in dsd128, dsd 64 no issues or any pcm rate. Im no engineer but processing speed or slowness will cause issues.
Thanks for providing that Core info. Can you please take a look over the other suggestions I noted and let me know if they help at all? Also, are you using the latest KEF firmware? You can check this in the KEF Control App.