Mac Studio M2 fails to show scaling options for ASUS ProArt PA279CV 

I have a Mac Studio M2 and my problem is as follows:

I purchased the ASUS ProArt PA279CV and connected it via USB-C to my Mac Studio (latest macOS Sequoia).

• I noticed that text and UI elements are too small in 4K resolution (3840 x 2160), and macOS is not providing proper scaling options (e.g., "Looks like" resolutions or HiDPI).

So, in order to try to overcome this, I tried the following:

Checked System Settings > Displays, but:

• No "Looks like" (scaled) resolution options were available.
• The monitor displayed standard resolutions, including some labeled as "low resolution."

Tried using the Option (⌥) key to reveal hidden scaling options, but it didn’t work.

Third-Party Tools

BetterDisplay:

• Installed BetterDisplay to force HiDPI resolutions.
• Adjusted settings but found that it didn’t resolve the issue.
• Removed BetterDisplay completely after it failed to deliver results.

SwitchResX:

• Installed SwitchResX to create and apply custom HiDPI resolutions (e.g., 2560 x 1440 HiDPI).
• Despite selecting HiDPI, the display appeared the same as non-HiDPI resolutions (no noticeable scaling or sharpness improvement).
• Removed SwitchResX after extensive troubleshooting failed.

Manual Adjustments and Troubleshooting

Ran a Terminal command to enable HiDPI globally:

sudo defaults write /Library/Preferences/com.apple.windowserver.plist DisplayResolutionEnabled -bool true

Restarted the Mac, but scaling options didn’t appear.

Verified the display resolution and settings in System Information:

• Confirmed the monitor was running at native 4K (3840 x 2160) but wasn’t using HiDPI.

3. Current Status

• Issue Not Resolved: Despite trying macOS settings, Terminal commands, and third-party tools, the ASUS monitor is still not displaying HiDPI scaling options.

Key Points

• Monitor: ASUS ProArt PA279CV (4K UHD, 60Hz, HDR).
• Connection: USB-C directly to Mac Studio.
• macOS Version: Sequoia (latest version).
• Problem:
  • No HiDPI or "Looks like" scaling options in macOS System Settings > Displays.
  • Tools like BetterDisplay and SwitchResX failed to fix the issue.
  • Terminal commands to enable HiDPI scaling didn’t help.
  • Accessibility settings and non-HiDPI resolutions didn’t resolve the small text/UI problem.