

This time, it doesn't seem to even start the download, it just hangs at what appears to be 0% - the Launchpad says "Waiting". I restarted the computer again and tried to install the app again. The app seemed to download but, too, could not finish the install. I went to download "Cleaner One - Disk Clean" from the Mac App Store. Upon restarting, the install did not finish, so I thought I may need to reclaim some disk space.

I restarted the computer after 4 hours of not completing. The download seemed to complete, but the install wouldn't finish. Recently, I tried to update Xcode to the latest (12.4) via the Mac App Store (3.0). Many applications upon first action seems to require a 2-4 second load to become responsive - once they've recovered that first time, things seem to be about as fast as they were on Catalina (no measurements, just perceptual observation).

Since upgrading to macOS Big Sur (11.1), my system has been slow and laggy.
