I have (3) x460G2 switches in a stacking configuration. And I have a room with multiple video over IP encoders and decoders (Crestron NVX 40+ encoders and 40+ decoders) I'm having an issue where when I switch between multicast streams the stream will freeze on the encoder for about a second or two before it will switch. I have enabled IGMP and PIM sparse mode. Fast leave is enabled. Also it seems to take about 2-3 seconds to switch streams as well. I can't seem to get it to switch faster and not freeze. Any help would be appreciated.