Very slow MacBook Air 2019, apps crashing, beachballs, one drive and powerpoint issues
There are so many issues and it's difficult to tell if they're related or not. At one point, Kaspersky was installed but this has long been removed. I've heard that it's a hard one to completely purge, so perhaps remnants of it could be lurking in the shadows? The solution to almost every issue currently, is to restart and wait for it to reoccur. Sometimes, shutting down actually restarts the machine. Trying to be detailed, but there are so many issues that may or may not be related. Thank you for your time!
MacBook Air 13″, macOS 11.3