Browser very slow after last update

Brave is very slow after last update in Windows 10.
I have a 8GB RAM, but i’m sure that’s not the problem. Before update I could have Brave in 5 windows and 20 tabs, including 2 or more with video streams and facebook. Now I can’t run any video. I’m typing this in Firefox.

imagen
Brave is open now with enough RAM and it’s useless

Does anybody know the reason of this?