The purpose of trying a non MQA 88.2 file was to exclude any coupling problem among dac and wiim at such sample rate.No only services I have tidal and amazon. I will try another non mqa dac which are schiit modi and their modi multibit. If these dacs don’t stutter, the issue will be the mqa core on wiim not playing nicely on mqa dac that has renderer. They should incorporate a toggle switch to turn off between renderer non renderer dac or if they can fix it without switch.
I think you can search on amazon by desired sample rate. There are links with sample test files also, at the moment I don't remind...
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