Zenfone Max Plus M1 ZB570TL

[Kuis_Kiske]

In many asus smartphones, the Asus Zenfone Max Plus M1 ZB570TL has a loud and best sound when listening to songs using earphones with AudioWizard, but unfortunately because when upgrading to android 8 the display it always lags and the speaker sound is small.
To listen to songs using earphones is satisfying.

[Falcon_ASUS]

Kuis Kiske

In many asus smartphones, the Asus Zenfone Max Plus M1 ZB570TL has a loud and best sound when listening to songs using earphones with AudioWizard, but unfortunately because when upgrading to android 8 the display it always lags and the speaker sound is small.
To listen to songs using earphones is satisfying.

Zenfone Max Plus M1 ZB570TL

@Kuis Kiske
Could your please tell me your FW version?
firmware version : Settings>System>About Phone>Build Number
If you try to update to the latest version, does the issue still persist?

[Kuis_Kiske]

WW_Phone-15.02.1904.453
Yes, I use the latest version, and the screen display is still lag and slow.
When I use android 7 everything goes smoothly, when I upgrade to android 8 the screen display hangs out.
What should I do?
I can't downgrade to android 7.

[Falcon_ASUS]

Kuis Kiske

WW_Phone-15.02.1904.453

Yes, I use the latest version, and the screen display is still lag and slow.
When I use android 7 everything goes smoothly, when I upgrade to android 8 the screen display hangs out.
What should I do?
I can't downgrade to android 7.

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@Kuis Kiske
Sorry, if you want to downgrade the system to Android N, I would like to suggest you to bring back your mobile to our service center.
The following is the contact information: 
http://www.asus.com/support/Service-Center-All-Countries/
Also you can contact the local service center for help. The following is the contact information: 
http://www.asus.com/support/CallUs#
Sorry for any inconvenience it may be caused.