There have been three issues documented regarding ticks and pops. One in the FPGA in relation to “a transition from DSD -> PCM, from PCM -> DSD, from one sample rate to another and when a clock starts or stops” which Ted has addressed in the Snowmass release. Affects all inputs.
Another is in the FPGA, introduced in Redcloud and only for DS Snr that occurs when “the absolute level of the signal (after the volume control) rises fast enough and stays high enough (within about 6dB of the maximum possible value) just the right amount of time an accumulator will overflow in the FPGA”. It’s the one where you could workaround the issue by reducing the DAC volume to ~80 or so. This also affects all inputs.
The last is Bridge II issue relating to Roon or a DLNA/UPnP player streaming DSD to the Bridge. It has been reported by many different people over what feels like a long time. This bug creates intermittent ticks and pops all through playback. Not just the scenarios above.
Because the symptoms are the same, the three issues have been conflated by many. Even in a post by Paul a month or so back.
Having said that, Snowmass has reduced the ticks and pops during DSD playback for me. Since installing Snowmass I’ve listened with the new Bridge II code installed and I still get the occasional tick/pop during playback. It’s not too bothersome now.
And Snowmass and Bridge v3.6.17 WOW! It’s like a new, much more expensive DAC.