Oreo screwed me in my Samsung S8+. How to fix it?

After update android 8.0.0 my Samsung S8+ showing lot off problems kindly suggest me to solve below mentioned issues.

1. Battery drain fast
2. Hang on multi-tasking
3. Wifi- network issue

can you please suggest me solution for these issues.

from Android Forums at AndroidCentral.com - Ask a Question https://ift.tt/2GayAAC
via IFTTT