Just Sent this to both Roon and WiiM Support:
As a Roon and Sonos user, I just picked up 2 WiiM pieces, an Ultra and a Pro, because they are said to be Roon Ready. Both Streamers are recognized in ROON as "Roon Ready" under audio settings but I cannot get them in sync no matter what I do. I've grouped, ungrouped, regrouped and rebooted- all to no avail.
Using the WiiM App I've tried auto sync and manual sync; auto does nothing. Under the default settings the WiiM Pro was approx. 4 to 5 seconds behind the Ultra, no matter which order I grouped them. So, I increased the Ultra latency +1000ms (max setting) and decreased the WiiM Pro latency -1000ms (max setting) and now they are approx.2 seconds apart. This is unlistenable and just plain unacceptable.
How can both Roon and WiiM call these devices "Roon Ready" when RAAT doesn't take care of syncing the endpoints as promised in a Roon Ready Device"? I bought these devices because of the Roon Ready Certification and the brand and function promise that accompanies it.
From Roon's own Website Concerning "Roon Ready"
Device certification
"Roon's QA team and the device manufacturer collaborate on a rigorous test suite to certify that Roon Ready devices meet an exhaustive set of performance requirements."
Synchronized multi-room
"You can play different music in every room, group your rooms together, or have a party with the same content playing throughout your home in perfect synchronization. Listen in one room or group multiple Roon Ready devices for synchronized playback around your home, regardless of brand."
Clearly that's not the case with these WiiM Devices, so I bought a Bluesound Node Nano, also certified as Roon Ready just to see if I could get it to sync with at least one of the WiiM devices. The answer is no, not a chance
So I must ask for support and insist on a remedy because clearly I am not receiving the benefit of the features promised. Can this be fixed with firmware? Can this be escalated? Either way, please advise when a fix can be expected.
Clearly the Roon and WiiM collaboration for rigorous testing to certify that these devices meet an exhaustive set of performance requirements, as promised, was not done here because synchronized multiroom playback is not possible. Again, please advise the remedy.