The screen is generally good, but the colors have a tint towards lime (green-yellow) from the factory! Obviously, different panels will have different colors, but it was off from the most neutral.
I've adjusted it as much as possible and will give you my settings for 2 profiles to help you.
GAME 1 (Profile):
Brightness: 85%
Contrast: 75%
Saturation R: 47 G: 48 B:40 C:47 M:47 Y:47
HUE: 50% ALL
OFFSET: R: 44% G: 41% B: 41%
GAIN: R: 86% G: 80% B: 100%
RESPONSE TIME: Super Fast
Dark Stabilizer: 0
(Game 1, Game 2, and Game 3 are custom profiles saved by the screen.)
To explain what these mean:
Basically, we're trying to balance the colors, their blacks, and whites, because colors are not 2D by nature, so we play with all their dimensions (shadows and highlights as well as other options that control everything together). The problem is that these screens are more prone to tinting (as I understood after researching for so many days). The reason for this is that these panels have much more intense colors and the slightest deviation is noticeable!
Overall, the goal is for the colors to be correct, especially in gray, white, and black! Grays are generally a delicate case, and for graphic designers, these deviations can ruin our work with inaccuracies, unfortunately! If you set the response time to Extreme, it will cause ghosting, so Super Fast is fine!
My settings are not for everyone, but they should have a good success rate. A good tip is to also change the settings in the NVIDIA Control Panel (Adjust desktop color settings) and check "Override to Reference mode" (important!).
ICC Profile: If you have Windows, don't touch anything, also download the ICC Profile from Dell just to be sure, although you won't notice a difference in Windows.
We know the good things about the screen, 165hz, FreeSync (Adaptive Sync), and G-Sync Compatible (for GTX1000 and newer cards!), and generally many colors! (Both good and bad) Overall, it's great for bright rooms because it doesn't reflect light as much. The product quality is perfect, especially at the current price of 165-175 Euros, but if you can, get something with HDR for a slightly better (but okay) difference, otherwise, it's good for what it says obviously!
(I hope Dell releases a firmware update to fix it because there is a problem by default.)
(Please also share your own settings!)
I hope I helped!