Occasional browser hangs - Version 80.0.361.0 (Official build) canary (64-bit)

Hi,
now I'm on Windows 10 build 19536 and Edge canary Version 81.0.367.0
the browser hangs only happen on this website after 2-3 minutes scrolling through my feed
VK.com
which mostly contains pictures, videos etc, basically like Facebook home. it's a popular website.
I have been experiencing this problem for few months now, through Edge version 79 to 81, through different Windows insider builds.

I sent several feedbacks with problem recording data. the thing is, it also happens in Google chrome.
the only browser that doesn't have problem is EdgeHTML, in Edge classic everything is super smooth, no hangs whatsoever.
I tried it with GPU acceleration off but it didn't help.

so when I visit VK.com, at first everything is smooth and fast, but after clicking on 2 or 3 pictures, opening them in Modal elements, the scrolling becomes gradually laggy and with delays, to a point that the whole browser hangs.

these hangs sometime recover on their own after waiting approximately 30 seconds and sometimes they don't and I have to force close Edge process.

I will gladly submit any form of diagnostic data required to figure out what's the problem in Chromium source that is causing this.

I'm actually afraid that after Edge classic gets replaced by the new Edge, I don't know what to do.