I don’t know if I just need to resinstall macOS 15 or if its part of a larger issue. I’ve used my MBP since Ventura with really no issues. Compared to being on Windows its been very painless.
However since upgrading to Sequoia, my experience has been absolutely horrible. From applications loading then going non-responsive with an invisible window to Spotlight search absolutely shitting itself and locking up the laptop for minutes at a time, I’ve gone from enjoying my MBP to coming very very close to throwing Asahi on it and calling it a day.
Has anyone else had major issues with macOS 15?
With the boot volume signed and sealed, it’s theoretically not possible for the OS to become corrupted in the ways that used to be common, but who knows?
Create a test account and run it for a bit. If the issues resolve, you need to troubleshoot your ~/Library.
If the issues aren’t improved by running a clean user account, it’s worth rolling back to 14.x. You can still download the installer and run an erase and install to enjoy MacOS again rather than switching entirely. If you need to find a URL to download it, Mr Macintosh publishes them. I also recently saw a GitHub project for an app that lets you download and version still shipping. It’s called Mist.app.