Here are a few tips and tricks to maintain your device after a software update:
1. Test your device in safe mode. If your phone is misbehaving, it's possible that a third-party app is causing the issue. To figure out what app is acting funny, you can use the Safe Mode feature. In Safe Mode, your phone won't run any third-party apps. This allows you to easily identity and remove the app that may be causing the problem. Give this link a try: https://www.samsung.com/us/support/answer/ANS00062983/
2. Wipe the cache partition on your device. The system cache partition stores temporary system data. It's supposed to allow the system to access apps more quickly and efficiently, but sometimes things get cluttered and outdated, so a periodic cache clearing can help make the system run more smoothly. Give theses steps a try:
3. Factory reset your device. Important: Please save any information you need prior to the factory reset because otherwise your personal information may not be recovered. If you have encrypted the microSD card, you must decrypt it before resetting the phone. Otherwise, your phone will not be able to read the data on the card. From Settings, search for and select Decrypt SD card, and then follow the on-screen prompts.
Before you perform a factory reset, be sure to back up your personal data, so you don't lose it all. Give this link a try: https://www.samsung.com/us/support/answer/ANS00062029/
Please keep me posted if you continue to experience these symptoms.
You may have a third party app that is causing the problem. Check to see which apps are using the most battery power under device care/battery and disabling or removing the suspect app.