I experienced the same after upgrading 22h2. I have a modern 20 core processor 32gb ram, nvme ssd, and a simple virus or malware scan blocks the browser or other apps to start. Or simply opening a new webpage. If I click on pause scan, everything runs good.
Also the app starting, hdd related things became slow since the upgrade.
Something was went very bad in the development and I cant believe MS havent see/cantt fix the enormous degradation of performance.
I ill go back to win10 in spite of its kernel doesn`t handle adler lake very well.