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Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it.

No question - it was a CPU bottleneck

The processor in my late 2016 Mac Mini is an Intel core i7, 3 GHz, with 16 GB RAM - this was (maybe still is?) the most powerful CPU available with a Mac Mini. Nevertheless, as I'm sure you know, some of those HQ Player filter settings are so processor intensive that I'm sure they can make most processors choke (at least momentarily!). ;-) I was running into the stuttering maybe once every one-and-a-half to two minutes with the "poly-sinc" setting. After the change to "poly-sinc-shrt", the last remaining download that still stutters (Scriabin's "Divine Poem" and "Poem of Ecstasy" on the Lawo label - see below) does so only once every ten minutes. OTOH, my DXD download of the Channel Classics Fischer/BFO Mahler Third plays back with no problems at all.

BTW, have you played around with these filters much? I was thinking of experimenting with "poly-sinc-shrt-mp".

And, yes, I can't say enough good things about George!

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