Disable adaptative contrast intel

Hello, I received my new PC a few days ago (Dell Inspiron 15 7506 2-in-1) and it is not a disappointment. However, I have a slight problem and I've been trying to solve it since the the first without success, trying everything possible. The problem I have is that there is a kind of adaptive contrast (from what I've seen that's what it's called) that darkens or brightens the screen depending on the color tones displayed, and this bothers me quite a bit.

This only happens when I use my PC on battery. On plug it acts normally in terms of brightness.

What I tried to fix this problem:

• Settings -> System -> Display -> uncheck auto brightness options (I don't have the auto contrast option).
  Power option -> Change power management mode settings -> Display -> normally from the videos I saw there is an option to disable auto contrast which is not available on my PC.
• Go to the Intel control panel (GPU), in the battery options to uncheck everything.
  Screen of the option 
• Use these two commands in cmd in admin mode (it does not change anything):
  Disable - On battery powercfg -setdcvalueindex SCHEME_CURRENT 7516b95f-f776-4464-8c53-06167f40cc99 FBD9AA66-9553-4097-BA44-ED6E9D65EAB8 0
  Disable - Plugged in powercfg -setacvalueindex SCHEME_CURRENT 7516b95f-f776-4464-8c53-06167f40cc99 FBD9AA66-9553-4097-BA44-ED6E9D65EAB8 0

Note that after each of these changes I restarted my PC but nothing changed.

However I have a way to solve my problem. In the , when I disable the graphics card Intel Iris Xe the auto contrast is removed. But I do not want to stay with a disabled graphics card. In any case I think it's a problem that must be fixed with the graphics card. By the way I don't know why there's two graphic card, but that doesn't really matter anyway.

Image of the graphics card

Here is the configuration of the PC if it can give any clues:
Processor: 11th generation Intel® Core™ i7-1165G7 processor (12 MB cache, up to 4.7 GHz)
Operating system: 64-bit Windows 10 Home, English, Dutch, French, German, Italian
Video Card: Intel® Iris® Xe MAX graphics card with 4 GB LPDDR4x memory
https://deals.dell.com/fr-fr/productdetail/8geq

Thanks to you for reading everything and if you have a clue don't hesitate to give it.