All cameras streaming are very slow Highlighted

[Issue ]
All cameras are very slow 

[Analysis]
The cctv server have gig card / and was connecting to Ethernet port so we advised to move the server to gig interface but same issue happened .

We checked the access and core switches for the cameras slowness issue and we found high output utilization on all interfaces :

A lot of multicast discarded :

We enabled the igmp-snooping under the VLAN 175 (CCTV VLAN) on core switch as CCTV use multicast :

[vlan-175]igmp-snooping enable

And now traffic is normal

[Root cause]

Server connected to Ethernet ports .

IGMP-snooping was not enabled under the vlan

[Solution]

1. Confirmed that the server connected properly to gig interfaces .

2. Enable IGMP-snooping under vlan .