Onboarding animated background is unnecessary cpu intensive

[samtygier]

Checklist

• I have updated to the latest available Home Assistant version.
• I have cleared the cache of my browser.
• I have tried a different browser to see if it is related to my browser.
• I have tried reproducing the issue in safe mode to rule out problems with unsupported custom resources.

Describe the issue you are experiencing

When on boarding (on a new Yellow) there is an animated background, with moving dots and lines.

This causes high CPU usage, enough to get my laptop fans running

about:processes in Firefox confirms that home-assistant is the culprit.

Firefox profiler gives

Describe the behavior you expected

An efficient web interface that does not waste energy.

Steps to reproduce the issue

1. Follow onboarding steps
2. View CPU usage in top
3. View tab CPU usage in about:processes in Firefox

What version of Home Assistant Core has the issue?

2024.5.3

What was the last working version of Home Assistant Core?

No response

In which browser are you experiencing the issue with?

Firefox 125.0.3 (64-bit)

Which operating system are you using to run this browser?

Fedora 39

State of relevant entities

No response

Problem-relevant frontend configuration

No response

Javascript errors shown in your browser console/inspector

No response

Additional information

No response