Last week there was a security update for my S22 ultra. Prior to the patch the phone worked great. Following the patch the phone crashes multiple times per hour.

Switching apps seems to be a large cause. 

When I switch apps the phone lags significantly, taking up to a minute to open. It is frozen during this time. If I hit the back button or home button the phone crashes and reboots.

I tried increasing the performance and clearing memory. Nothing has improved its condition.

I have had this phone for 2.5 years. It is too soon to upgrade. Everything was fine, now it is past sluggish and is not able to be uses as a phone. Something as simple as opening the camera can crash it.