Description

I see huge performance drop in 6.6 version in editor. After React profiler, I see that there is Shuffle process on all spikes. Also, very slow RichText component. After downgrade to 6.5.5, I don't see this. Why I have Shuffle function on third party blocks?

Step-by-step reproduction instructions

1. Create page with many columns, rows, inner blocks.
2. If you have fast device, you need to Slow down CPU in Web developer panel
3. Start editing text, after 20-30 seconds you will see huge freezes

Screenshots, screen recording, code snippet

https://monosnap.com/file/WmQFBqsQlCM2TBD3V5nEqIe7dkepH5

Environment info

No response

Please confirm that you have searched existing issues in the repo.

• Yes

Please confirm that you have tested with all plugins deactivated except Gutenberg.

• Yes