@oddiofyl I’m glad you resolved your issue! Seeing your DAC’s specs, it seems it only is capable of converting up to 192Khz, so adjusting that setting makes sense.
Regarding some not being able to discern streamer quality, I usually boil it down to the fact that those people’s systems are not resolving enough (like putting a $9K phono cartridge on a $1000 turntable / tonearm), they aren’t the critical listeners, or the upgrade in sonics isn’t worthwhile. But for those with a highly resolving system who are looking to make the best out of it, a high performance digital source should make a significant impact.