Unable to Synchronise music when grouping multiple end points

Roon Core Machine

imac computer

Networking Gear & Setup Details

mac computer is connected via ethernet

Connected Audio Devices

2 x bluesound node 2i connected via ethernet
2 x bluesound node 2i connected via wifi

Number of Tracks in Library

27000 tracks

Description of Issue

whenever I add another end point to a group the music is not synchronised such that I can only use roon through one end point at a time. I’ve tried tweaking with the delay settings but it doesnt seem to resolved the issue.

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