I have one customer where Windows devices are able to stream video to Chromecast but Apple devices are able to stream video without audio, and the display is more jerky than streaming from Windows devices. Also 4k streaming is disable according the status shown on Apple devices (both Macbook & iPhone).
Customer is using Instant 6.5.4.2 with Central and I have tweaked all required parameter as per Instant VRD. Any idea what else can we do here or if it is some client setting on Apple that we need to tweak?