Dear Samsung Member,
Greetings from Samsung Customer Support!
Kindly follow the below mentioned step to improve the performance of the device:
Enter safe mode: Press and hold the Power key, when Power off icon appears.>Press and hold the power off icon.
Exist safe mode: Press volume down and power key simultaneously for 5 seconds to restart the device.
Note: If your device functions correctly in Safe Mode, it is most likely that the issue lies with a 3rd party application that can be uninstalled to resolve the problem.
For further assistance, register your concern in Samsung Members Application (Open Samsung Members Application > Send feedback > error report/ask questions).
Thank you for writing to Samsung.
Samsung Customer Support