How to solve the problem with online video for customers?

Question

Video broadcast

Good day.
The following problem has long been observed:
The speed of the client for various services corresponds to the declared one.
But the provider's clients experience problems when watching videos from youtube, rutube, vk.com, when watching streaming video from computers and TVs, and even when playing music from vk. Freezes, stutters, dead freezes of the stream before reloading the page / switching the channel.
The problem is solved by transferring the subscriber access switch to gigabit. Although according to cacti statistics, the traffic does not rise above 30-40 Mbps for some.
The problem was tested from popular operating systems (Win. Linux, MacOS), on all available browsers, the problem is clearly on the provider's side, that is, on mine.
Of course, we started solving the problem by switching to gigabit. But it is at least not entirely reasonable to transfer some nodes where a couple of clients with tariffs of 4-8 megabits are sitting.
The network is built on various D-Link switches, from the 1200 series to the DGS-3120. Clients ~800
Has anyone encountered a similar problem and found a solution?

Answer 1

it is logical that 10 clients at 10 megabytes per second clog the band in gigabit, transfer the main channels to gigabit where there are many clients.