Hi @Thomas_Kuhnel,
Thanks for the update here!
I wonder if perhaps you had two separate issues here? One with the DNS and then the known one for Devialet (Audio file loading slowly since Devialet RAAT)?
For the Devialet-specific one, users have mentioned that using WiFi or a non-gigabit switch helps.
In either case, do let me know how it goes and happy holidays to you as well!