Following. Similar issues
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Lumin T2 as the endpoint
Sonictransporter as the Roon core.
Both on Ethernet, and connected on same switch.
Aris surfboard modem & Orbi mesh for Wi-Fi.
All system switches replaced three weeks ago.
Try updating Roon to build 795.
Same issues with LS50WII. All apps updated. This occurs only with MQA tracks. I have opened a similar support thread. This DOES not occur with Tidal Direct and MQA.