Stumbled across this post researching some Topping DACs and thought I'd share something that might be of use? I was having the exact same issue with my Okto, Mac, and Audirvana. Others were too, with the only common factor being the Okto. Playing DSD files were subject to random violent...
Okay...after some extensive farting around I think I may have stumbled across something that eliminates the static crash...so far. I swapped over to Jriver, and in the Playback Options menu, selecting "Load full file (not decoded) into memory" seems to do the trick. Other than separate weird...
I have this exact problem. 1.42 FW, Mac Mini, and (for now) Audirvana. Had any luck figuring this out? I just sent another email...my last one went unanswered.