well from a none expert...
that Inter Graphic driver is OK but really useless. Diesnt really work right. install it but it really wont solve your issue. As the previous person said Adaptive Brightness is gone. The only really easy way to deal with that now is to use the Battery Saver mode. It will lower your screen brightness on battery to a Windows preset level and will really extend your battery. After you plug it in the brightness will go back to your brightness level.
This is why many of us were going nuts with 2004 update and where Battery Saver in the notifications window did NOT work. Now that's fixed too with recent Optional Updates to 2004. you can check thru this Board link - https://answers.microsoft.com/en-us/windows/forum/all/battery-saver-button-not-working/da28365f-3b8d-4a01-950e-df04df66d7c9?page=1 BUT the end results is... Battery Saver is fixed so use that.
Just remember that Battery Saver will restrict certain app functions so do everything you need and then turn on Saver.