I see a new CPU Usage graph

There was an update to the client area, and it made the graphs more readable (in my opinion anyway)

The CPU usage isn’t just used when you edit the site, but also when people visit the site. does your site use a lot of PHP\javascript?

Or if its a wordpress website, are you using a CPU heavy plugin like elementor that might be causing the problems?

You’ve mentioned migrating the site? Was this from another hosting provider? or do you just mean adding the new domain to the site?

This article from admin might help you understand more about CPU limits too:

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