I am facing the exact same issues.
I have 64 GB of Ram, AMD Ryzen with 8 cores and the page takes 30 seconds to run.
Here’s what I have tried so far (with no success)
Delete docker and downgrade (currently on 4.10)
Check for permissions (every new install seemed to have database connectivity issues until I realized it was that certain strings in the database weren’t being replaced in terms of changing the site address.)
Change WSL to Hyper-V
Change .wslconfig settings.
It takes longer to load a local development single page than it did connecting to a content heavy site a 14.4 modem in the 90s.
I am beyond exasperated and there is no good information on the internet or in any DevKinsta forum about how to address this.
Any ideas?