After installing the driver, go into the monitor's OSD → Color → sRGB Mode → On. Then set Windows to use the Acer ICC profile. This clamps the panel to sRGB, preventing over-saturation. Without the driver, Windows may still drive the panel in native wide gamut, causing unnatural reds/greens. The Acer EB321HQU driver is not about "making it work" — it works anyway. It's about making it work right.

Yes, mandatory. The Acer driver's ICC profile and proper EDID enumeration prevent mismatched gamma (2.2 vs. 2.4) and black level issues.

Yes, if you want >48 kHz sample rates.