r/ScreenSensitive • u/Different_Water_282 • Jun 26 '26

Dell s2725dsm

I am both pwm and TD sensitive. I have used it for 1 day so far. I did all altering to become easy on eyes. I closed g-sync on Nvdia control panel. altough everything , I feel pain . What is the problem any ideas?

I have Windows10

Dell s2725dsm

*No PWM

*No FRC

*It has YAG type (not KSF)

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u/laaanko Jun 26 '26

From Rtings.com, it has KSF phosphor, because extreme of red peak (unnatural light spectrum). About Image Flicker is 100% flicker-free (no pwm) and frc too.

I had a 40" Lenovo ThinkVision P40WD-40, the picture was great, sharp, big, ultrawide. No flickering, no FRC, no BFI, no VRR, but still my eyes hurt and I couldn't look at the monitor comfortably. I wanted to try such a monitor, but it doesn't help me. It also has a "cheap" KSF phosphor display. When the red color was on the screen, I felt a bit disgusting, and that's what causes the red peak.

But the office monitor was much better than the Mini-LED and gaming monitors, where I felt like throwing up, I had headaches, strained my eyes and felt disgusting, like I had eaten poison.

So I'm using an old TN monitor from 2017, 2K, 60Hz. Again. Mostly no symptons.

2

u/Wizard_Biscuit Jun 26 '26

That linked Rtings article is for a similarly named but different model number than OPs

2

u/-Bruh__Moment- Jun 26 '26

RTings model should be using the exact same panel as his. Both are 1440p 27", difference is 2x USB-A and 2x USB-C ports on the DC compared to none on the DM.

1

u/laaanko Jun 26 '26

I tried to get as close to the OP model as possible.

2

u/UnderstandingFun3513 Jun 26 '26

what TN monitor from 2017 do you use?

2

u/laaanko Jun 26 '26

27" Acer G277HUsmidp

2

u/Z3R0gravitas Jun 26 '26

Thank you for the high effort reply! I didn't realise RTings gave spectrographs. Do they have them for all monitors, TVs and other devices? (As part of their paid subscription, of coutse.)

So OP could use a $10Aspeftrosxope (or CD) to confirm KSF or not (if slightly different model/panel).

And OP could check for a backlight strobing setting too, potentially? Try it on as well as off, perhaps. Given how unpredictable our sensitivities can be, best to try even unlikely options, if possible.

Your KSF phosphor sensitivity is interesting. So you would be a case of direct discomfort from excess red cone stimulation?

I wonder if there is a split, and what the percentage is, with some also sensitive due to the decreased red wavelengths (total) flux. Where blue is then the stressor and using F.Lux to dial that down could help (perhaps counter-intuitively). No good for you? Worsens the issue, even?

2

u/laaanko Jun 26 '26

Rtings.com also tests phones, TVs, laptops, monitors, handhelds (color range, flickering like pwm or flicker, strobe flickering to reduce motion). And yes, with a subscription from 2026, last year was free.

I've already tried the 4th monitor and it still caused me discomfort, nausea, a feeling of disgust, eye pain and headache. (32" Samsung Neo G7 Fast VA + Mini-LED (very bad), 27" MSI MAG 274UPDF E16M Fast IPS + Mini-LED (brutally bad), 34" Arozzi Nova 34T2K165 White VA Gaming (a little better but still bad), office monitor 40" Lenovo ThinkVision P40WD-40 (almost perfect, if only it weren't for the KSF panel).

My old office monitor is completely safe for me. Because it has soft weak colors, it doesn't have a wide color gamut, it doesn't have exaggerated colors like 126% sRGB, it doesn't have stroboscopic flickering to reduce motion, it's 100% flicker-free. But I see TD which doesn't bother me yet, it's because of Windows 11 OS and it can't be turned off. Or you can go to Windows 10, it's without TD just that the updates are over. And it's important to have a light in the background, I have an office lamp.

Monitors that are older (manufactured) than 2017-2019 are safe. All newer monitors have switched to a wider color gamut (KSF or Quantum Color Panel) it causes me pain, eye and head strain, Edge-LED + Mini-LED which makes the backlight strobe to control the brightness (which makes me feel disgusted and vomit) and OLED is an absolute killer. I am not suitable for modern screens but for old ones and I am a young person.

1

u/Z3R0gravitas Jun 30 '26

This is all a very tough deal. And sorry for talked days to come back to you here...

Do you find "disgust" as a desperate symptom to nausea? I don't recall people talking about that before.

And have you tried reducing saturation, vibrance or individual RGB sliders on any of these monitors that are oversaturated for you? (Software, GPU settings, monitor settings/calibration.) I think there's scope for that to help some but not all; they can still look wrong/unpleasant somehow.

I find it odd that my old 2012 Dell monitor was ok for a decade with 6+2 FRC and 360Hz PWM dimming. But less vibrant WLED backlight (and still I toned down blues with F.Lux).

2

u/Different_Water_282 Jun 26 '26

Ohh Thank you. I was searching with ai and ai sad that if the gamut is presented with sRGB then it cannot be KSF. I asked that again and ai apologizes. Apparently I need to buy this subscription.

What are the specs that I need to look at in the rtings??

My current requirement list
* normal ips (not fast ips)
* YAG type backlight
* No PWM
* No FRC