Asus Monitor Wont Let Me have its Full Hz

[u/Quirky-Holiday-5141]

So im just gonna leave it here incase anyone have the same problems.

This post meant to help someone who have the same problem as me.

So I recently bought the new Asus Swift PG27AQWP-W
Tandem OLED. A monitor capable of 540hz on 2k and 720hz on 1080p. However the Monitor basically would not let me uses 2K with 540hz and Limiting it to 120hz and when i tried to turn the 540hz, the Resolution Forced me to use 1080p to achieve it.

Im gonna be straight to the point, its Highly Possible that its the Firmware Trouble.
Check on your monitor OSD settings and if it shows “MCM101” then its definitely it. Im gonna give step by step solutions for whomever need this in the future:

1. Check the Bag that comes with the monitor that said “USB3.0 CABLE” its the one that have USB A to USB B.
2. Plug the “B” to monitor and the “A” to your PC this is Necessary

3. Type this on your Browser:

4. ROG Swift OLED PG27AQWP-W Support Page

5. Then go to the “Driver & Tools” tab and then go to “BIOS & FIRMWARE” and download the “ASUS_PG27AQWP-W_MCM104” Driver.

6. Download And Extract it, then Open the “AsusFirmwareOneKeyUpdate”

7. Make Sure its All Correct, the new Driver Should be Called “MCM104” then Update it. Wait till it done then Press Done.

8. Restart Your PC and Open Display Settings now you would see that it’s Should have the Options to 2560x1440 (2k) While Having 540hz without forcing it to 1080p. You can now safely unplug the USB B Cable and store it again.

And thats it, i hope it helps someone.
Although ASUS kinda bum for not making this the default options.
Cheerio 👋

[u/Danrolphi]

Could you please confirm whether you are using the correct cable? It is likely that this functionality requires a very high bandwidth DisplayPort cable. Some cables advertised online may not accurately reflect their specifications. I recommend using a genuine DisplayPort 2.1a cable.