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[TFTCentral] Acer Predator XR341CK 34" Curved Gaming Screen with G-sync - Page 528

post #5271 of 6126
People new to scanlines

http://community.acer.com/t5/Predator-Discussions/MULTIPLE-Problems-with-New-X34/m-p/393568/highlight/true#M1483 see fragmachine's post

http://community.acer.com/t5/Predator-Discussions/Predator-X34-OC-amp-GSYNC-Scanline-problem/m-p/393009#U393009

People have tried drivers, changing cables, etc.

Edit: don't know why the links don't work. Select the text and choose go to.
Edited by Mountainlifter - 11/8/15 at 6:52am
post #5272 of 6126
Quote:
Originally Posted by drfish View Post

In this image they are so obvious it can't possibly be the problem, just the photo - but if you're looking for them on your screen this is a highly exaggerated version of what a lot of us are whining about.

I'm still debating about what to do with me. On Friday I was all set to pack it up tomorrow. Now, after a couple more days playing on it I'm not so sure again. The problem sucks but not having the screen would suck too. I played a few hours of Dawn of Discovery - Venice yesterday, frame-rate was 70-100 the whole time, I could see the lines if I looked closely, even at high FPS, especially over water.

I have until Wednesday to do a return to NewEgg. I'll give Acer until then to confirm if they can/will fix the scanline problem before I decide for sure.

Yea those are purly from the s6 edge I used to take the pic. In person there is not a single line.
post #5273 of 6126
Quote:
Originally Posted by Mountainlifter View Post

People new to scanlines

http://community.acer.com/t5/Predator-Discussions/MULTIPLE-Problems-with-New-X34/m-p/393568/highlight/true#M1483 see fragmachine's post

http://community.acer.com/t5/Predator-Discussions/Predator-X34-OC-amp-GSYNC-Scanline-problem/m-p/393009#U393009

People have tried drivers, changing cables, etc.

Edit: don't know why the links don't work. Select the text and choose go to.

when's your monitor arriving mate?
post #5274 of 6126
Hey all,

I did the test with Gsync "Fullscreen only" VS Gsync "Window+Fullscreen"

here some results - all of them confirms Fullscreen only is better for gaming

Witcher 3 delta +5 FPS noticeable on my rig (from 39 FPS to 44)
Assassin Creed II delta +2 FPS almost not noticeable
Batman AA GOTY delta +3 FPS almost not noticeable

but these values are HIGHLY dependent on the game itself, probably how 's coded

regards
post #5275 of 6126
I can confirm on my unit that the scan lines don't need to have g-sync active to appear. It's simply turning on OC mode, and even with g-sync disabled I'm seeing them on grey's - took me this long to see that. Even when it's OCed to 75hz.

This leads me to believe that the panels that have scan lines are simply OCed too far, and that we may be possibly be playing an OCed panel lottery.

I'm in a similar boat to drfish in that I'd rather not send it away, and don't want to be without it, but I will probably be returning it to NCIX providing they make it a smooth RMA for me. I will either keep trying them until I get a good one, or wait it out a couple of weeks and see what comes of the scan line issue. It isn't noticeable at arm's length, making me reconsider but it's there.

In either case, this is the monitor and is probably worth playing a bit of a roulette for. If I get three duds, I'll wait for Asus. I just much prefer this stand/bezel to the asus cyborg thingy. Though, perhaps there is some reason it is natively 75hz, where this is natively 60hz.
Quote:
Originally Posted by funfordcobra View Post

Yea those are purly from the s6 edge I used to take the pic. In person there is not a single line.

This is almost definitely where I was seeing lines from, as what fish pointed out is what I was seeing.

I'm going to assume that beth's pictures had the same issue, so it's three clear looking panels now. JC's were like crystal and my biggest motivation to return my lemon for a plum.
Edited by Smokey the Bear - 11/8/15 at 11:18am
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post #5276 of 6126
Quote:
Originally Posted by Smokey the Bear View Post

I can confirm on my unit that the scan lines don't need to have g-sync active to appear. It's simply turning on OC mode, and even with g-sync disabled I'm seeing them on grey's - took me this long to see that. Even when it's OCed to 75hz.

Ok but how could you explain why scanilnes to completely disappear everytime FPS are near the maximum refresh rate defined in OSD?
Why are they more noticeable when FPS go down?

I just finished some tests using Pendulum Demo (as we can switch Gsync On & Off) and there are the results :

1 - Overclock disabled / 60hz Nvidia Panel

No scanlines Gsync Gsync On or Off EXCEPT when moving FPS slider down to under 20-25fps. Then I notice the scanlines again when Gsync is ON.
Also, when ticking Gsync On & Off at low FPS, the upper screen flickers, especially when moving the mouse.

2 - Overclock enabled (75hz in OSD) / 60hz Nivida Panel

I wanted to see if when remaining at 60hz with OC ON, the scanlines would occur with Gsync.
So here it is, I can see them at 40 constant FPS & 40-60.
They disappear when I disable Gsync or when I move the slider to the max (60 fps)

I would have expected no scanlines but maybe it's because the refresh rate is internally set at 75hz.

So I'm going further

3 - Overclock enabled (75hz) / 75hz Nvidia Panel

Scanlines when Gsync enabled at 60 FPS and below but completely disappear when I moved the FPS slider to 75.

4 - I made the exact same test for 85/95/100hz

At 85hz, I could still see the scanlines at 75 FPS when they were not present with 75hz test (or at least noticeable) but disappear when approaching 82-85 FPS
Same result for 95/100hz

Also, scanlines strenght was the same in all different tests. They are as much perceptible at 60hz or 100hz.

To me, it has to do with the Gsync unit.

I did a test with 100hz overclock / Gsync disabled and absolutely none artefact/scanline nor frame skipping.
Edited by Dr Mad - 11/8/15 at 12:19pm
post #5277 of 6126
Quote:
Originally Posted by Dr Mad View Post

Warning: Spoiler! (Click to show)
Ok but how could you explain why scanilnes to completely disappear everytime FPS are near the maximum refresh rate defined in OSD?
Why are they more noticeable when FPS go down?

I just finished some tests using Pendulum Demo (as we can switch Gsync On & Off) and there are the results :

1 - Overclock disabled / 60hz Nvidia Panel

No scanlines Gsync Gsync On or Off EXCEPT when moving FPS slider down to under 20-25fps. Then I notice the scanlines again when Gsync is ON.
Also, when ticking Gsync On & Off at low FPS, the upper screen flickers, especially when moving the mouse.

2 - Overclock enabled (75hz in OSD) / 60hz Nivida Panel

I wanted to see if when remaining at 60hz with OC ON, the scanlines would occur with Gsync.
So here it is, I can see them at 40 constant FPS & 40-60.
They disappear when I disable Gsync or when I move the slider to the max (60 fps)

I would have expected no scanlines but maybe it's because the refresh rate is internally set at 75hz.

So I'm going further

3 - Overclock enabled (75hz) / 75hz Nvidia Panel

Scanlines when Gsync enabled at 60 FPS and below but completely disappear when I moved the FPS slider to 75.

4 - I made the exact same test for 85/95/100hz

At 85hz, I could still see the scanlines at 75 FPS when they were not present with 75hz test (or at least noticeable) but disappear when approaching 82-85 FPS
Same result for 95/100hz

Also, scanlines strenght was the same in all different tests. They are as much perceptible at 60hz or 100hz.

To me, it has to do with the Gsync unit.

I did a test with 100hz overclock / Gsync disabled and absolutely none artefact/scanline nor frame skipping.

Beats me man. Here are my results at 100hz:

GSYNC ON Pendulum test = Scanlines, lessen as the fps increases but do not vanish.

GSYNC ON Desktop (grey box) = Scanlines

GSYNC OFF Pendulum test = The lines are 99.999% non-existent, but if you stick your eyeball on the panel, you'll see they're there (not on every unit but certainly on mine).

GSYNC OFF Desktop (grey box) = Scanlines that aren't quite as dark as they are with gsync on, but still gross and much worse than in the pendulum demo.

OC OFF/ GSYNC OFF = No scanlines.

OC OFF/ GSYNC ON = Faint scanlines in Pendulum test, none on desktop grey box.

The image in all cases is crystal clear on the right side of my panel to give me an idea of what it should look like. In either case, I'm getting scanlines with g-sync off/OC on, or even OC off and gsync on.

Playing GTA V and Diablo 3 all weekend and I cannot see a thing, except for in GTA V on distant, grey buildings in the horizon on the left side of the panel. Diablo 3 looks pristine. Forcing my FPS to 50 in D3 however, makes the scanlines appear.
Edited by Smokey the Bear - 11/8/15 at 1:11pm
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post #5278 of 6126
I must admit you're right.

I have faint scanlines on the desktop, I can see them when I move a plain grey box all over the screen.
Always on the left half side.mellowsmiley.gif

(100hz Gsync on or Off)

I don't know what to do; 21/9 is really godlike for gaming but in the other hand, I can't play withoug Gsync anymore.

Maybe I'll stick with XB270HU till the things turn to be better next year.
post #5279 of 6126
Quote:
Originally Posted by Dr Mad View Post

I must admit you're right.

I have faint scanlines on the desktop, I can see them when I move a plain grey box all over the screen.
Always on the left half side.mellowsmiley.gif

(100hz Gsync on or Off)

I don't know what to do; 21/9 is really godlike for gaming but in the other hand, I can't play withoug Gsync anymore.

Maybe I'll stick with XB270HU till the things turn to be better next year.

I feel you man. I never knew 21:9 would be as excellent as it is, and there is no going back from it or g-sync. If I end up getting one without the issue, I'll be sure to update.

Clear panels do seem to be out there.
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post #5280 of 6126
Quote:
Originally Posted by Smokey the Bear View Post

I feel you man. I never knew 21:9 would be as excellent as it is, and there is no going back from it or g-sync. If I end up getting one without the issue, I'll be sure to update.

Clear panels do seem to be out there.

IMHO, you and anyone else with scan line issues should absolutely return your X34s.

What you guys describe and what i've seen with scan line issues on a couple different monitors in the past are totally different experiences compared to what I and a few others with flawless + scan line-free X34s are seeing with ours.

You guys paid the premium price for these X34s just like we did, and you should have a monitor where you're not constantly thinking in the back of your mind how sub-par it is compared to someone else's or feel like a "second-class" owner. If the experience you were looking for based on the price you paid for the X34 is different than mine (and it definitely seems like it is), then you deserve to have one that's just as problem-free. It might suck to go through the RMA hassle and the 2-3-4 weeks without an X34 and whatnot, especially if you don't have a viable backup monitor, but it's better to do it now than drive yourself crazy knowing that you're unhappy with your current X34 on the daily. My 2 cents. thumb.gif
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