Synchronized playback with other players requires extensive tuning!

It's not ok thatthis app is advertised as "support synchronized playback with other players". When i tried to synchronize (on my FireTV), the playback was totally out of sync (syncing between my other Squeezeboxes works perfectly out of the box).
Then I found this note on the developers website: "The quality of synchronized playback can vary a lot DEPENDING on the device It works well on a Galaxy Nexus, but it will not be perfect and will need to be adjusted in your server settings. . [...]
It then Took me some time to find out how thesis adjustments are done and some more time to get it to work some extent, but it's not perfect quiet.