Hi Darren
thank you for the response
i will provide the LLD soon , the issues here started two weeks back when i was offsick and the guy im working with rebooted the core switches twice and thing seems working but again this video streaming started to go low till it stops playing at all. microsoft teams, youtube, google streaming they dont work at all and this a Private college +- 3000 users inc teachers the WAN link internet link has 2gig pipe and they using the thrid party SP FW Fortigate which i dont access to. majority of the network here is wireless few wired network.
hope this explaination heps for me to get a resolution or the cause of this problem even some of the dashboard report doesnt give mich