Hey @djd711 ,
how odd! Does the same thing happen if you run the phone in Safe Mode? Safe Mode wouldn't remove anything from your phone; it allowed us to know if a third-party app is causing the issue. You can find all the steps to run the phone in Safe Mode HERE.
If so, I would recommend sending our engineers an Error Report so they can investigate this to find what is causing the issue and provide you with the next steps or fix this in a new update if necessary.
You will need to reproduce the issue and send the report within 15 minutes from the Samsung Members app> Get help> Error Report. Remember to add a brief explanation of the issue and screenshots or a video of what is happening.
Hello, i ve a s21 plus samsung and have the same problem. When i m using my phone and enter a notification, the phone run slow until the notofication end. This Was after one UI 4 instalation. Any solution? Thanks