Out of sync between Bluesound/Dutch&Dutch

Roon Core Machine

Proxmox Virtual Environment 8.0.3, Debian 12 LXC Container, Roon 2.0 (build 1299)
4 Cores, 6 GB Memory

Networking Gear & Setup Details

virtualized OPNsense
Cisco CBS250-24P-4X Switch
Ubiquiti U6-Pro Access Point

Connected Audio Devices

2 x Dutch& Dutch 8c (Living Room, wired, D&D Firmware 2.3.15)
1 x Bluesound PULSE 2i (Kitchen, WiFi, Bluesound Firmware 3.20.52)
1 x ELAC Discovery Z3 (Bedroom, WiFi, ELAC firmware 1.0 (build 56) stable)
1 x Roon Extend v3.2.0 → Raspberry Pi 4/Topping D30 Pro/A30 PRO (Headphone Rig, wired)
1 x RoPieeeXL 2023.05.1 → Raspberry Pi 3/RME Babyface Pro (Homeoffice, wired)

Number of Tracks in Library

32’851 tracks

Description of Issue

Since a few weeks I have a problem with sync when I group living room and kitchen. Can’t say when that exactly started. There were updates for Roon, Bluesound and Dutch&Dutch.
The group loses sync when the sample rate of the music changes. If I play an album or radio and the sync works, the system does not lose it anymore.
I use Convolution filters for the living room and the kitchen. These were created with Focus Fidelity Filter Designer. I have found that in case of loss of sync, deactivating and reactivating the convolution filter on one of the systems will bring back the sync.

3 posts were merged into an existing topic: NAD/Bluesound Grouped Zones out of sync, stopping playing, and/or skipping tracks [Investigating]