Hello @Razvan_Seiciu,
Thanks for the update and for completing all these tests.
Regarding the drift messages you’re seeing:
we’ve received multiple similar reports from other WiiM users. This behaviour is caused by an internal delay inside the device that RAAT cannot fully account for. We’ve already raised this with WiiM, and we’re waiting on their side for improvements.
For reference:
As for the single dropout you captured when running Roon Core on the QNAP:
a rare, isolated dropout is not something that will affect listening. The frequency of these events still correlates with the available CPU headroom — lower-power CPUs tend to exhibit them more often, even if the usage graph looks “low”.
Please continue monitoring the behaviour, and let us know if the rate of dropouts increases or becomes audible during playback. But the main recommendation would be to run the Roon server on the more powerful devices.