battery life – Is your Galaxy S7 running slowly after T-Mobile 11/2018 update?

Several days after receiving this update, my phone has become slow to do anything. Simple things like: sweep to answer calls takes 2 to 4 seconds, brighten a screen when the call is incoming also takes several seconds. The battery life also suffers – I lose about 30% of battery each day compared to what it was before. When I look at what consumes the battery, the Android system is the biggest consumer, about 10 to 20% per day.

In addition, the phone began to complain about running out of space while I had a 32GB SD card that was empty. Go into storage mode shows that on 32GB of internal storage, there is only 1 to 2 GB of free space, that is after cleaning all personal data. Most of the power is in system memory. There is no way to see what goes into system memory consumption because the stock tools do not show its contents.

Does anyone else have this problem? Any ideas how to solve it?