➤  ASUS Monitor Settings
-> For playing CS (old): Overclocking ON (280Hz), OverDrive 120 (in the secret menu), Adaptive-Sync(DP) OFF, ELMB Sync OFF, GameVisual FPS Mode, Shadow Boost Level 2, Brightness 70, Contrast 80, VividPixel 25, ASCR OFF, Blue Light Filter Level 0, Color Temp. User Mode 100 100 100, Saturation 50, Skin Tone Natural

-> For playing CS (new): Overclocking ON (280Hz), OverDrive 120 (in the secret menu), Adaptive-Sync(DP) OFF, ELMB Sync OFF, GameVisual FPS Mode, Shadow Boost Level 2, Brightness 70, Contrast 80, VividPixel 25, ASCR OFF, Blue Light Filter Level 0, Color Temp. User Mode 100 83 90, Saturation 50, Skin Tone Reddish

-> For casual use: Overclocking ON (280Hz), OverDrive 120 (in the secret menu), Adaptive-Sync(DP) OFF, ELMB Sync OFF, GameVisual Racing Mode, Shadow Boost OFF, Brightness 70, Contrast 80, VividPixel 25, ASCR OFF, Blue Light Filter Level 0, Color Temp. User Mode 100 94 96, Saturation 50, Skin Tone Natural

OD120 is achievable by entering the service menu ( press the power button and hold menu (5-way), then press menu again and it will pop up on top left, there will be a small "F" for the service menu, click on it)
Now go UP with the 5-way joystick (If you scroll down it will change GameVisual Mode to sRGB->9300k->....) and click on OD Strong Weak, if it's ON by default set it to OFF and back to ON.

The firmware used for this guide is MCM104, newer products are shipped with MCM105, there are reports of early batches running MCM103, none knows the actual difference between these 3 firmwares and not a single firmware has been publicly released by Asus as of 17/08/2020

➤  BenQ Monitor Settings
-> For playing CS: Picture mode Gamer 1; Black eQualizer 15; Color Vibrance 10; Low Blue Light 0: Gamma 2; Color Temperature Normal; DyAc2 (or DyAc+) Premium; Brightness 90; Contrast 60; Sharpness 10; AMA 20 (Or 15 on XL2566K; High on XL2546K)

-> For casual use (XL2586X): Picture mode Standard; Black eQualizer 0; Color Vibrance 10; Low Blue Light 0: Gamma 3; Color Temperature Normal; DyAc2 Off; Brightness 90; Contrast 50; Sharpness 7; AMA 20

-> For casual use (XL2566K/XL2566X+): Picture mode Gamer 2; Black eQualizer 0; Color Vibrance 10; Low Blue Light 0: Gamma 3; Color Temperature (99 96 100); DyAc2 (or DyAc+) Off; Brightness 90; Contrast 50; Sharpness 7; AMA 15

-> For casual use (XL2546K): Picture mode Gamer 2; Black eQualizer 0; Color Vibrance 10; Low Blue Light 0: Gamma 3; Color Temperature (100 98 97); DyAc+ Off; Brightness 90; Contrast 50; Sharpness 7; AMA High