Apps Crashing or Running Slow
If you’ve had any issues with apps that used to work perfectly before, it might be an issue with the app itself and not your Mac.
At first, some apps might experience some problems, like running slower than usual or crashing unexpectedly. Chances are apps will continue to do this until the developers update their apps for Big Sur.
Although, it’s possible that an app is ready for Big Sur but you haven’t updated it yet. To do this go to the App Store and click on Updates on the left side menu to make sure all your apps are up to date.
On the other hand, if you have a new MacBook or Mac mini with the brand new M1 Chip, it’s possible that the apps you’re having problems with are still made for the older Intel-based Macs. This is a problem that will be fixed in the future as more developers start working on optimizing their apps for the M1 Chip. Until then, Apple’s Rosseta 2 should help you use the apps that haven’t been optimized until they’re updated.