Why is my battery draining si fast? And also why's my phone is super slow when charging

[Android Central Question]

When i updated my phone (Huawei Honor v8) to oreo everything went sucks. My battery is draining so fast and also when my phone is on charging state its super super slow. I want to uninstall the oreo update plz help

 

[STARGATE]

You can't undo the update, but you can save and back up your phone's data and do a factory reset. Many people get better results after that.
Let us know how it goes.

 

[B. Diddy]

Welcome to Android Central! Try also wiping the cache partition: https://www.hardreset.info/devices/huawei/huawei-honor-v8-knt-al20/recovery-mode/