I have 2 Macbook Pro 15 inch from 2018.
I have updated one of the both with the last Mac OS update (not exactly the last but 1 before), and my 2 LG external screens (4k) are not usable anymore, it burst my eyes, especially on heat colors (i barely don't see any difference on dark colors, but for example, white on green really hurts your eyes).
Since i have the chance to have 2 identical Macbook Pro and i didn't update the second one, i made the test to plug it instead of the updated one (i am using 2 USB C port). And it still works fine!
It's been almost 2 years i have these Macbook Pro and these 2 screens, everything always worked perfectly, and the issue appeared right after the update on one of it.
What do you think i should do ?