I have the EXACT SAME issue as in this post: forums.intel.com/s/question/0D50P0000490V7bSAE
Youtube video color saturation changes after i hover on the video in chromium based browsers. The only difference is that I have Intel HD 530 + GeForce 940MX. I'm using the newest driver DCH 126.96.36.19977. The issue was fixed in some old driver release (check out the old thread) but it either wasn't fixed for my configuration or it reappeared.
the problem persists after disconnecting the Nvidia card. It happens in chromium-based browsers - Chrome and Opera. No problem in Edge.
Also, I've recently reinstalled Windows (not related to Intel) and the problem persists. I had the problem on the old system with outdated 15.x drivers and some newer DCH drivers. Now with the new install the problem is also present with the default drivers Windows 10 installs and also with the fresh DCH I have right now. So I think that any solutions involing driver/browser update are ruled out.
SSU report attached.
Edit: Oh, and if that interests you - my laptop is an MSI GL72 6QC.
Edit 2: I forgot to mention what does fix the problem (but doesn't satisfy me):
a) turning hardware acceleration off in the browser
b) making the browser run with Nvidia GPU.
And another thing - the color saturation I get when "fixing" the problem with mentioned solutions is the one that I see after hovering over the video with Intel GPU. So the non-hover saturation on Intel seems to be wrong.
Plus, there are options in the Intel GPU panel to change color settings of videos. I can use those settings but they only apply when my mouse doesn't hover over the videos. When I hover (or stop the video so that the Youtube overlay is present all the time), the Intel video settings don't apply at all. So I think that's actually where the problem lies. Of course, the default settings or any other configuration I can apply never makes the videos look the same with/without hover.