Excessive cpu usage on certain websites

I have an issue similar to this question.

I have noticed it on my websites, but here’s an example offender – https://www.howtogeek.com/426749/how-to-access-your-linux-wsl-files-in-windows-10/

I am using chrome on google. I tried the developer tools, but couldn’t see anything like a crypto miner (maybe I just don’t know where to look). What could be causing the issue?