Hey there, quirozson!
Thanks for stopping by the Apple Support Communities. We understand you have upgraded your home network to a mesh network, and since doing so have been having issues with AirPlay 2. We're happy to look into this with you!
AirPlay 2 requires all devices be on the same network. While a mesh network technically is the same network, with multiple access points it may cause the AirPlay 2 feature to sometimes act unexpectedly. We recommend seeing if AirPlay 2 works without issue on a non-meshed network to help determine if that is the case.
We would also suggest reviewing the tips provided in the Apple Support article Recommended settings for Wi-Fi routers and access points - Apple Support to find out what Apple considers optimal network conditions.
If you need more help, don't hesitate to respond back.
Cheers!