XG27AQDMG 180Hz mode is broken

[RealNC]

In all firmware version so far, including MCM104, the 180Hz mode is broken. At least with an Nvidia GPU. When G-SYNC is enabled in the Nvidia control panel, when switching to 180Hz the display will start duplicating frames. Moving the mouse cursor fast on the desktop will result in this pattern:

Every third frame or so is shown twice. Also, when playing a game with G-SYNC, there is judder, meaning VRR does not work correctly in this mode. Furthermore, every other correctly working mode (240Hz, 144Hz, 120Hz, 60Hz) shows VRR flicker. 180Hz does not, which is a further indication that VRR is not actually working in this mode.

Please fix this in the next firmware.

[Aureliannn_ROG]

Hi @RealNC ,

To better assist you with the flickering issue, we would like to gather more information.

Please confirm the following:

1. Flickering condition: Does the screen flicker regardless of the refresh rate setting?
2. When did the issue start: Has this issue been present since you purchased the monitor, or has it recently started?
3. Connection cable: What type of cable are you currently using to connect the monitor? Is it the original cable that came with the monitor?
4. Testing with other devices: Have you tried connecting the monitor to another device (e.g., another computer) to see if the issue persists?
5. Graphics card driver: Please ensure that you have the latest graphics card driver installed.
6. Device type: Are you connecting the monitor to a laptop or a desktop?

Providing this information will help us pinpoint the cause of the issue. Thank you.

[RealNC]

Flickering issue? There's no flicker.

[RealNC]

I asked someone I know who has the same monitor, and the 180Hz mode is also broken for them when g-sync is enabled in the nvidia control panel. This is not an issue specific to me only.

[Aureliannn_ROG]

Hi @RealNC ,

You mentioned that "The XG27AQDMG monitor has issues in 180Hz refresh rate mode, including screen duplication and VRR function failure. 

Additionally, in other refresh rate modes (240Hz, 144Hz, 120Hz, 60Hz), the VRR function flickers." To further investigate the issue, could you please record the occurrence of the issue and provide it to us in an MP4 file? 

Additionally, please respond to the six questions I previously asked to assist the team in analyzing and confirming the issue.

We greatly appreciate your understanding and cooperation.

Thank you.

[RealNC]

> Additionally, in other refresh rate modes (240Hz, 144Hz, 120Hz, 60Hz), the VRR function flickers." To further investigate the issue, could you please record the occurrence of the issue and provide it to us in an MP4 file? 

You can use the VRR flicker video file from the RTINGS review, since I get exactly the same behavior on my unit. The MP4 file is here: https://files.catbox.moe/ko0we9.mp4

The RTINGS review page showcasing the VRR flicker of this monitor can be found here: https://www.rtings.com/monitor/reviews/asus/rog-strix-oled-xg27aqdmg#test_24453

> Additionally, please respond to the six questions I previously asked to assist the team in analyzing and confirming the issue.

Sure. Answers are below.

> 1. Flickering condition: Does the screen flicker regardless of the refresh rate setting?

It flickers in games when VRR is active and 240Hz, 144Hz, 120Hz or 60Hz is selected as the current refresh rate in Windows, and the game has frame rate fluctations due to frame time spikes. It does not flicker in 180Hz mode because VRR is not working correctly in that mode.

> 2. When did the issue start: Has this issue been present since you purchased the monitor, or has it recently started?

The issue was there since I purchased the monitor.

> 3. Connection cable: What type of cable are you currently using to connect the monitor? Is it the original cable that came with the monitor?

I am using the original DisplayPort cable that shipped with the monitor. It is connected to the DisplayPort input on my GPU, which is an Nvidia RTX 4070 Ti Super.

> 4. Testing with other devices: Have you tried connecting the monitor to another device (e.g., another computer) to see if the issue persists?

No. I do not own other devices. But I have asked other people with this monitor, and I have read reviews of this monitor on different review sites, and they all confirm that this monitor has VRR flicker.

> 5. Graphics card driver: Please ensure that you have the latest graphics card driver installed.

I do. I am currently using Nvidia driver version 566.36.

> 6. Device type: Are you connecting the monitor to a laptop or a desktop?

I am connecting the monitor to a desktop PC, running Windows 10 22H2.

> Providing detailed device specifications (MB/CPU/GPU/PSU, etc.) and the respective driver versions, OS version, and BIOS version will help us analyze the issue more effectively.

Mainboard: MSI B550-A PRO

CPU: AMD Ryzen 7 3700X

GPU: Palit GeForce RTX 4070 Ti Super JetStream OC

PSU: Corsair RM750x

Nvidia driver: 566.36

OS: Windows 10 Education 22H2.

MB BIOS version: 7C56vAJ1

Monitor BIOS version: MCM104

GPU BIOS version: 95.03.45.00.47

[Aureliannn_ROG]

Hi @RealNC ,

Due to the recent holiday, we were unable to respond to you in a timely manner. 

Thank you for providing the complete information. 

We have submitted the details to our backend team for verification and analysis, and kindly ask for your patience.

[Aureliannn_ROG]

Hi @RealNC ,

thank you for your patience.

After internal confirmation, the issue you're experiencing is caused by the graphics card being unable to provide a stable output on the OLED panel.

Due to the varying brightness levels at different refresh rates on OLED panels, this leads to visible flickering. 

Currently, the manufacturing technology of OLED panels cannot compensate for the flickering caused by unstable graphics card output. 

This is a common issue with OLED displays across other brands as well.

To mitigate this, we recommend lowering certain settings in the game, such as texture details, animation effects, or turning off VRR (Variable Refresh Rate), which can help ensure stable output from the graphics card.

Thank you for your understanding and cooperation.

[RealNC]

That's nice and all, but the issue I reported is not the VRR flicker. I reported that the 180Hz mode doesn't work correctly. You were then asking me for more information about the flicker, which is not what my original post is about.

The 180Hz mode is simply broken and you need to fix it in a firmware update. I provided all necessary information about it in the very first post in this thread.

[Aureliannn_ROG]

Hi @RealNC ,

We understand the issue you are experiencing, where enabling G-SYNC and switching to 180Hz mode causes certain frames to be repeatedly displayed. 

Our team is currently investigating this issue, and we appreciate your patience while we work on it.

We will provide updates as soon as we have more information. Thank you for your understanding and support!