It’s not that Windows is overcompensating. It is that we are trying to compensate for sending a very dark overall image to the screen by using a brute force method to extract as much brightness as possible from the display.
The overlays are not a part of that darkened image so they must be darkened to match or they will end up overly brightened.
You’re doing too much without providing valuable feedback with photos of the screen and settings. How am I supposed to assist if we can’t go through this step by step? I’m not able to visualize and process all this at once in my head.
So you do something and it looks washed out, there’s a reason for that. It would be nice to know what preset you tried, and stuff like that to guide you as to what’s the next step.
The most important thing to remember is that you have to adjust your Peak and your Paper White Luminance values.
Unless you’re doing external Tonemapping, HDR always needs to be enabled in RetroArch Video Settings.
If using a Sony Megatron preset, HDR also needs to be enabled in the Shader Parameters of the Preset itself and you have to adjust the Peak and Paper White Luminance from in the Shader Parameters of the Preset itself.
If you’re using any other shader you they won’t have Peak and Paper White Luminance settings so you’ll have to adjust those settings from the RetroArch Settings–»Video–»HDR menu.
So once you understand this, let me know and we can take it from there. For now, you need to stick with one preset or preset pack and get that to work before going all over the place…
Have you looked up your TV on RTINGS or other review sites to determine its Peak Luminance yet?