Help Stroboscopic Effect/ ghosting

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KrumelPL
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Joined: 29 Jul 2024, 17:04

Help Stroboscopic Effect/ ghosting

Post by KrumelPL » 29 Jul 2024, 17:55

nothing special happened it started happening slowly until like this. feel that it is 240 hz but unfortunately it looks like this everything works great tests and other similar were done nothing is everything is as it should be, but it is not

ufo test, youtube, videos is normal

scrolling look too herrible everywhere

I have a new computer because I thought something was broken on the old one, everything new, monitors tested, different windows, different monitor options, 3 computers tested, mice, keyboards, programs, scans, settings, drivers, cables and electricity, new 240 Hz monitor, when moving, no matter what games or options, it always looks like this.

testen on
rtx 3060
rtx 4060 ti
rtx 4070 super

tested over 20 drivers on the cards with ddu

display:
zowie 2546k
acer xb253
aoc 25g32m
and 1 more acer 144 hz

ryzen 5 5600x
ryzen 7 5700x

b 450 msi, rog strix b550 gigabyte.

8-16-32 GB RAM from 2666 to 3600 overlocked and not.

windows 10,11 updated and not.

I will accept any advice

I've been sitting on this for a month now
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RealNC
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Re: Help Stroboscopic Effect/ ghosting

Post by RealNC » 30 Jul 2024, 06:13

KrumelPL wrote:
29 Jul 2024, 17:55
nothing special happened it started happening slowly until like this. feel that it is 240 hz but unfortunately it looks like this everything works great tests and other similar were done nothing is everything is as it should be, but it is not

ufo test, youtube, videos is normal

scrolling look too herrible everywhere
In the browser you mean? Have you tried a different one just for testing? (Firefox, Edge, Chrome.)

Just moving a window around with the mouse looks fine?
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The views and opinions expressed in my posts are my own and do not necessarily reflect the official policy or position of Blur Busters.

KrumelPL
Posts: 7
Joined: 29 Jul 2024, 17:04

Re: Help Stroboscopic Effect/ ghosting

Post by KrumelPL » 30 Jul 2024, 08:22

-scrolling looks bad everywhere windows, games
I've never focused on windows maybe I have this impression from all this that the window is fine but the texts in it seem to blur and overlap and make light shadows of course as soon as I move

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Discorz
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Re: Help Stroboscopic Effect/ ghosting

Post by Discorz » 30 Jul 2024, 14:08

KrumelPL wrote:
29 Jul 2024, 17:55
ufo test, youtube, videos is normal

scrolling look too herrible everywhere
It's normal to see stroboscopic effect if content is in motion and your eyes are not tracking the content. Motion looks vastly different depending on how our eyes correlate to content. Whether they follow moving objects or not, or whether there is motion. There can be:

1. Stationary eyes
ㅤA. Stationary images
ㅤB. Moving images
2. Moving eyes
ㅤA. Stationary images
ㅤB. Moving images

All current displays are prone to stroboscopic effect for stationary eyes as a sample rate of 144, 240 or even 1000Hz fps is simply not fast enough to fix it. If you're aiming to get clean motion clarity you'll want to eye-track/camera-track the content (case 2B). However if eyes/camera are stationary, the moving content should no longer look clean, but very blurry (1B, the case you are recreating).

Read more in recent similar post: viewtopic.php?f=2&t=13213

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KrumelPL
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Re: Help Stroboscopic Effect/ ghosting

Post by KrumelPL » 30 Jul 2024, 16:07

you wrote so well, but if you focus on something you see more or less normally depending on the monitor and whether the hz are constant. it was cool and it broke I don't know what how, and no it's not my eyes other people around me see it too

ufo test look great on my monitor, because of course I don't touch anything there

for me literally when you focus on a character you see 5 characters at the same time for example, it's terroristic for the eyes and on top of that it's impossible to play fast
my friend's 144 hz looks like a thousand compared to mine

I have 23 years of experience myself but I haven't encountered anything like this yet there is a problem that I haven't been able to solve for a month

KrumelPL
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Joined: 29 Jul 2024, 17:04

Re: Help Stroboscopic Effect/ ghosting

Post by KrumelPL » 30 Jul 2024, 17:33

32e3c53b-3110-4bd5-ad64-76e279fab7f0.mp4
(724.42 KiB) Downloaded 205 times

sry for the quality but my phone cam is bad

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Discorz
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Re: Help Stroboscopic Effect/ ghosting

Post by Discorz » 31 Jul 2024, 02:53

I'm not sure if in this video 1) the camera was stationary and the content was moving, or 2) content was stationary the camera was moving. If 1. then this is classic stroboscopic effect from insufficient sample rate which can't really be fixed. If 2. then this is stroboscopic effect from insufficient flicker rate and can be fixed by disabling blur reduction/backlight strobing mode.
KrumelPL wrote:
30 Jul 2024, 16:07
you wrote so well, but if you focus on something you see more or less normally depending on the monitor and whether the hz are constant. it was cool and it broke I don't know what how, and no it's not my eyes other people around me see it too

ufo test look great on my monitor, because of course I don't touch anything there

for me literally when you focus on a character you see 5 characters at the same time for example, it's terroristic for the eyes and on top of that it's impossible to play fast
my friend's 144 hz looks like a thousand compared to mine

I have 23 years of experience myself but I haven't encountered anything like this yet there is a problem that I haven't been able to solve for a month
Other people see this effect too. Its just that some are more sensitive to it than others. I now dislike it my self while not minding it at all few years ago. It can be one of those things; once you see it u can't unsee it.

But if something really is wrong with your monitor I'd start by doing a pursuit camera test (test case 2B). Now that u say ufo test looks fine (when eye-tracking the ufo I assume), try using Smooth Frog instead. It's pretty much the same thing as testufo, but more game-like since it's an .exe. U just try to accurately track the pattern with your camera like here. Hand-wawing a phone camera can work fine as well. Tracking accuracy can be confirmed with sync track which can be enabled in menu or with mouse wheel click. Sync track needs to be vertically aligned. Make sure to set camera exposure to preferably Hz/4 (240/4=60, s1/60), the image is not over/under exposed and well focused. Do the test at ~1500 pixels/second speed. Replicate the settings like in your games (Hz, fps, vsync, VRR off/on...). If the test looks normally smooth, without any multiple-image artifacts, then we can confirm the cause.

KrumelPL
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Joined: 29 Jul 2024, 17:04

Re: Help Stroboscopic Effect/ ghosting

Post by KrumelPL » 31 Jul 2024, 11:00

just like ufo, clean, smooth and clear at 1900 speed, as you can see nothing spreads, the only effect as it should be on such a monitor is smearing behind the character
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Discorz
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Re: Help Stroboscopic Effect/ ghosting

Post by Discorz » 31 Jul 2024, 14:42

Yeah, looks fine to me, compressed footage but fine for this purpose. It must be classic stroboscopic effect/phantom array you're experiencing.

KrumelPL
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Joined: 29 Jul 2024, 17:04

Re: Help Stroboscopic Effect/ ghosting

Post by KrumelPL » 31 Jul 2024, 16:05

I don't understand the answer completely, do you mean that I see it because I saw it once? If that's what you mean then no it's not like that because my 144hz friend sees normally as it should be, nothing is multiplied or anything

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