On each page on https://tweakers.net/ where user .oisyn is active, scrolling is slow and lagging. It is possibly related to his high-framerate animated avatar. But even in Internet Explorer 11 there is no problem.
Brave 0.17.13 rev f7242c7 on Windows 10 Pro x64 v 1703
Edit: also many other avatars on the same page (some of them are also animated) are not displayed.