Was fine until installed bios update 315. Now games lag and stutter. Same issue that the FX505GT has, which has been happening for over a month.
I've copied the fix here which worked for me until asus fix this.
I hope it will help anyone else having the same issue.
I tried everything including a full system reset and fresh start reinstalling windows, updating drivers, rolling them back, nothing worked apart from this:
(Solution for FX 505 GT lag and performance drop issues.
BIOS downgrading won't fix this problem as it auto updates on every reboot.
Do this thing instead ,
Go to windows search and type -msconfig.
Click enter and go to services and check- hide all microsoft services.
Then disable the following services shown in the pic below and restart the laptop.
Untick these services and click apply and ok.
(Also disable extend battery life in gaming from intel grahics panel)
NOTE:
Armoury crate and My asus wont work after following the above mentioned procedure.
To revert back you just need to enable all those services and restart the laptop.
Till asus fixes this issue this solution works.