I am typing this comment on a Pixel 7. I have had it for nearly two years and I have never experienced these symptoms.
The only app I can think of that doesn’t load in under a second is Asphalt Legends - and that’s because the app takes a week to load on anything.
I am very satisfied with this device, and doubt I’ll be upgrading to Pixel 9. I have no reason to upgrade.
If you know it was the most recent rsync command: just type !rsync.