Thermal Image Retention Mini-LED (Acer X34 V3)

[777N]

Hi everyone,

I am experiencing a severe and persistent issue with my Acer Predator X34 V3 (a 34" Ultrawide curved IPS panel with 2304 Local Dimming zones). I am on my third panel replacement via Acer RMA, and the exact same defect keeps returning within weeks.

I am highly confident this is a fundamental engineering/thermal design flaw rather than a random batch defect, and I would love to get some technical insight from the experts here on Blur Busters.

The Setup & Use Case:
GPU: RTX 2070 Super
OS: Windows 11 (HDR always on)
Usage: Heavy HDR gaming with static HUDs (using Special K for frame-rate limiting and HDR tweaks).

The Symptom:
After a few weeks of usage, a severe form of image retention develops exclusively along the bottom edge and the bottom-left/bottom-right corners (exactly where game HUDs, minimaps, and the Windows taskbar reside).

At first, I thought it was standard temporary liquid crystal laziness due to voltage. Even if it occasionally fades slightly after a long time off, the ghost image returns almost instantly (within minutes) as soon as the panel warms up again. It has now degraded into a permanent tint/shadowing on the bottom edge.

My Technical Hypothesis:
Given that this has happened on three brand-new panels connected to the same electronics/chassis during the RMA repairs, my conclusion is Thermal Image Retention / Localized Phase Transition: the density of the 2304 Mini-LEDs, combined with the power required for high-nit HDR, creates a massive thermal load at the bottom of the chassis (where the main PCB/LED drivers are likely located).
Because this monitor is entirely fanless (passive cooling), the heat builds up unevenly, hitting the lower edge of the curved panel hardest.
The continuous temperature likely approaches or exceeds the clearing point of the liquid crystal layer or warps the internal diffuser/polarizing films, causing permanent alignment failure of the crystals.

Questions for the Community:
Has anyone else investigated the thermal limits of these ultra-dense, fanless Mini-LED structures?

Is it possible that the mainboard/power delivery is overvolting the LEDs in the lower zones, or is passive cooling simply inadequate for 2000+ FALD zones pushed to max brightness?

Since the manufacturer keeps replacing the panel but reusing the same internal housing/logic board, is there any software mitigation that can prevent this localized thermal cooking?

I would appreciate any engineering insights or similar experiences with high-density FALD monitors (like the Samsung Neo G8/G9 line, which seem to share similar physical constraints).

Thanks in advance!

[777N]

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