This message was posted on behalf of Intel Corporation
Please let me know if you are trying to install the latest graphics driver using Windows 10 update or using Acer driver and manual tool.
Additionally, tell me the current BIOS version of your tablet.
As I already said, the update came from Windows Update service. I went back to older version, but the update already appeared in Windows Update again. Since I cannot dismiss any update, only postpone it, it is a real problem.
My BIOS version is 1.09.
I found out that the mentioned settings value resets everytime I change power mode (balanced, high performance, ...) in Control Panel, so I tried to disable Power Management ("C:\Program Files\Acer\Acer Power Management\ePowerTrayLauncher.exe") and Quick Access ("C:\Program Files\Acer\Acer Quick Access\QALauncher.exe") actions in Task Scheduler and the problem seems to be solved. There must be some glitch inside these (or one of these) Acer utilities in combination with latest driver version..