Issues after May 5 security update - Asus Zenfone Max M2

[Hightower]

Please tell us some basic information before asking for help:
Model Name: Asus_X01AD
Firmware Version:
Rooted or not: not rooted
Frequency of Occurrence: always after last update
APP Name & APP Version (If your issue relates to the app):
In addition to information above, please also provide as much details as you can, e.g., using scenario, what troubleshooting you've already done, screenshot, etc.
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I am using Android 9 Pie with May 5 security update and I am facing these issues.
The major issues for me are Battery charging which takes 4-5 hours and battery discharging which is happening really very fast.
Also, the touches are not as smooth and the phone unnecessarily hangs in simple tasks even when ROM is more than 5GB free.

[Hightower]

I wouldn't mind if I won't get Android 10 update but please provide Stable Android 9 Pie update.

[victor010]

Please follow below steps may improve battery backup: 
1. Close apps that are not used (Bluetooth, WiFi, GPS, etc.)
2. Adjust sleep time and brightness (Settings > Display)
3. Boost memory when you see memory consumption is high with no app running,
4. check for background running applications, stop/disable unwanted apps, you can manage apps from auto-start manager. 
5. Check the following article for more information: https://www.asus.com/in/support/article/604/

Recalibrate battery
To recalibrate battery, charge your phone to 100% without interruption.
then discharge it normally till 0%(phone gets switched off).
charge it to 100% in switched off condition and keep it in that state for a little more time.
now switch on your phone in charged condition and unplug when ASUS logo appears.
keep the phone unused for 5 mins.
you will get far better battery life as the battery stats.bin file will be updated.