First, what firmware are you running? Ruckus fairly recently made some changes (circa 9.7 if I remember correctly) that increases the QoS level of bonjour packets, which reportedly helped a ton.
On top of that, some have found it helpful to disable directed multicast and IGMP/MLD snooping. This Ruckus article describes the process from the view of a zonedirector, but most of these commands have 1:1 mappings to standalone CLI commands if you are running Standalone.
https://support.ruckuswireless.com/answers/000001910It's worth noting that I've never found it necessary on 9.8 and newer firmware to apply these custom settings -- Bonjour seems to be routed reliably out-of-the-box for my network config.