I have iap 315s and looking through the chromecast AP settings, they want AP/client isolation disabled. Where is this setting? Also, is there a list of settings that are requried for Chromecast to work. I have made the follwoing changes:
Enabled: DLNA, AirGroup across mobility, domains, Guest bonjour multicast
AirGroup Services with checks: googlecast, DIAL, DLNA Media, DLNA Print