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

May 30, 2025
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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


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acer-predator-x34x-oled-woled-hdr-woes-v0-jpsnla8xvs1f1.jpg