Here are some tips to keep your device running at full performance after an update.
1. If you are experiencing lag with any apps after an update, I would recommend force stopping and clearing the cache. Go to settings > apps > tap on the app you are experiencing the symptoms with > tap on force stop > then tap on storage and clear the cache.
2. I would recommend wiping the cache partition. 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 It's supposed to allow the system to access apps more quickly and efficiently, but sometimes things get cluttered and outdated, so a periodic cache clearing can help make the system run more smoothly.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 these steps a try:
3. Factory reset the device. This feature will completely erase your personal information and data to make your phone a clean slate.
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.