I also have this problem, using an Auris BluMe Pro bluetooth streamer and Qobuz, although it is not micro-seconds, but more like 1-2 whole seconds. It also happened with Apple Music so I don't think it is the fault of the music service. I did some internet sleuthing and the most likely culprit was some kind of "handshake" that occurs each time Bluetooth connects with the device (despite the device saying it is "connected").
I thought it might be caused, or at least exacerbated, by the fact that I sometimes use Qobuz on my smartphone and sometimes through the web app on my desktop computer, but now that Qobuz has broken the web app for Linux computers by implementing Qobuz Connect - we could do another thread on that! - I can only use my phone and I still get the delay.
Have not found a solution, but if Eversolo thinks this is "normal" then I'd be looking for a different DAC. On the other hand, it does support Qobuz' decision to implement Qobuz Connect, which as I understand it, eliminates Bluetooth and streams via wifi.

