Check if your graphics card driver menu has separate user settings for RGB/HSL in different modes.
My main PC (Win98SE on Riva TNT2 and later GeForce3 Ti200) had a graphics card menu with very complex user settings. I tried to compensate colour flaws of my Trinitron CRT (unfortunately they vary by heat and vibration) and so desperately tried hard to understand how it worked. AFAIK the GeForce3 could even predistort trapezoid shape for projectors etc., so there may be different user settings for different modes of the graphics card (e.g. separate RGB/HSL curves and contrast/brightness in video playback mode). Check if there is e.g. a text, photo and gaming mode, or if it thinks it should use HDR where it shouldn't.
Last edited by =CO=Windler; 01/03/23 06:25 AM.