When youtube is open brave uses more than 13% of my cpu, i have Intel(R) Core™ i7-12700H 2.30 GHz and this is huge for this type of processor, sometimes brave jumps to 19% and this causes heat spikes in my cpu
What i noticed:
1- the problem arises more with youtube than any other websites
2-cpu usage gets real high upon scrolling youtube homepage or subscription page etc…
3-temps lower a little when i watch a video however its still relatively high arounf 55 C
Enabled Extensions i have:
1-Bitwarden Password Manager
2-Cold Turkey Blocker
3-Copyfish 
Free OCR Software
4-FluentTyper: Autocomplete and Spell Checker
5-Free VPN ZenMate-Best VPN for Chrome
6-Google Translate
7-Highlighter
8-minerBlock (Blocks cryptocurrency miners all over the web.)
9-Mouse Tooltip Translator - PDF & Youtube dual subs
10-Pesticide
11-Pinnable ChatGPT: pin GPT chats in sidebar
12-Return YouTube Dislike
13-Save to Pocket
14-Scroll To Top Button
15-SponsorBlock for YouTube - Skip Sponsorships
16-Sprint Reader - Speed Reading Extension
17-Tab Wrangler
18-Video Speed Controller (disabled for youtube)
19-WhatFont
Disabled Extesions:
1-SingleFile
2-AI Subtitles & Immersive Translate - Trancy