Auto brightness/dimming in apps?

[arturss]

I have noticed that when Illustrator is open, my screen brightness changes.

This seems to happen whenever the overall "brightness" of the images displayed on the screen change. For example, if I zoom out from my image,

a majority of the screen is grey due to the program background, and my screen fades to a noticeably darker brightness. If I zoom in on a darker section of my image,
it becomes even brighter. I've had a look through the options but couldn't see anything that would help with this

[Reagen98A5]

I do not have MSI Boost on my computer and it is still dimming! 

Someone please help, it is driving me insane. 

[LAURA123]

Hey did you finally find the problem? I'm at the same point  than you, I don't have MSI boost either Norton and I don't know which 3rd party app can be doing this, help help help!!! 😞

[tanja m]

I had to uninstall Norton Utilities Premium to solve the problem.

[romeom18832515]

And I had to remove iolo System Mechanic. Same issue. Nothing helped but removing this "optimizing" tool...

[Stefan22562068ak4i]

I had to uninstall Gigabyte's version of X Boost