Question HDR woes with Acer Predator X34X OLED (WOLED) monitor ?

[Nagi266]

Just wondering if anyone has this same monitor model ?

The highlights in HDR mode are horrific, it as if the monitor is doing some kind of dithering to them / color banding, since a screenshot would not show the issue I have attached a couple of photos as an example.

• I observed this issue on HDMI on PC and PS5 and DP on PC.
• Bit depth set to 10bit and full rgb range.
• Used Windows HDR Calibration and same result.
• DSC on and off - same result.

At this point I'm just wondering whether the monitor is faulty or not, I did try to find a way to flash an updated firmware but looks like Acer removed this feature.

Note: You cannot change settings while in HDR mode. Brightness, contrast and gamma are all locked while in HDR mode.

PC Specs:
R7 7700X
4070Ti 12GB
32GB 6000MT/S
Win11 24H2

Link to the monitor in question:
PREDATOR X34 OLED - X34 X Tech Specs | Gaming OLED Monitor | Predator | Acer United States

 

[ak47jar3d]

I would disable hdr. Its has VESA DisplayHDR True Black 400 rating which is basically a fake hdr rating since it won't improve image quality and cause weird artifacts.