Possible Ghosting / Response time issue - BenQ GW2760HS

[camason86]

I recently bought the BenQ GW2760HS. It is a VA panel and I understand they aren't the fastest things out there. But it is advertised at 4ms so I'm wondering if the issue I'm experiencing is directly related to response times, or something else.

This problem is only noticeable in games. Basically what's happening is that things appear brighter when the screen is still, but get darker when you move or look around. It's mostly apparent on finely detailed textures, or scenes with high contrast. For example, if I look up at a tree against the sky and then look back and forth, the details of the tree appear to get darker and lighter as I move my crosshair around the screen.

I do use the "Premium" AMA setting instead of the default "High" which noticeably reduces motion blur while gaming, but this effect I'm describing is apparent either way. I'm guessing it is related to motion blur/ghosting but I'm just not sure. I previously had a IPS panel which had a 5ms response time and did not have this issue whatsoever, even though the panel was supposedly 1ms slower than the BenQ VA.

If anyone has any input on this that would be much appreciated.

Thanks.

 

[gilbadon]

4ms is very fast. That is also a nice display. My guess is the issue is coming from your system.

 

[camason86]

4ms is very fast. That is also a nice display. My guess is the issue is coming from your system.

Thanks for the reply. I'm sure the issue isn't with my computer. I've compared this monitor side by side with a IPS panel hooked up to the same computer, and only the BenQ has this issue.

 

[gilbadon]

You may try limiting the refresh rate to 60Hz max.

 

[camason86]

You may try limiting the refresh rate to 60Hz max.

60Hz is the default refresh rate for the monitor. This problem is apparent while running at 60Hz. I tried overclocking it to 75Hz which was successful, but the issue is still there.

 

[gilbadon]

I saw on the spec sheet that the vertical refresh rate was 5x-7x Hz. Is there a way to adjust it on the monitor side to stick to one level or the other?

 

[camason86]

I saw on the spec sheet that the vertical refresh rate was 5x-7x Hz. Is there a way to adjust it on the monitor side to stick to one level or the other?

Not that I've noticed, but I will double check the settings on the monitor for something like that.

 

[gilbadon]

And if you think it may be ghosting, that is often caused by a bad decoding of the video signal. You may want to look at your cable bringing in oscillating noise. Try a different type of cable.

 

[camason86]

And if you think it may be ghosting, that is often caused by a bad decoding of the video signal. You may want to look at your cable bringing in oscillating noise. Try a different type of cable.

I was originally using DVI and switched over to HDMI. Pretty sure this problem was happening with both, but I will switch back to DVI and do some more troubleshooting to narrow it down.

 

[gilbadon]

Okay. And ghosting is typically when the image is blurry and spreading out like this the following. Is that happeneing?

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

 

[camason86]

That isn't quite what I'm describing. However the monitor does have that issue if the AMA setting is on "High" or "Off". I believe the issue I'm having is similar.. maybe just ghosting occurring at a more subtle level. It's like high contrast images are bleeding into each other.. ie the light color trails and bleeds into the dark color when moving or looking around in games. The effect is that the image appears "shaky" or unstable because everything is getting lighter and darker.

 

[gilbadon]

Try turning sharpness and other settings off that require processing of the signal. Try to get the signal as close to raw as possible.

 

[camason86]

Try turning sharpness and other settings off that require processing of the signal. Try to get the signal as close to raw as possible.

Will do. Thanks for the tips. I'm posting from work so I'll try a few things when I get home tonight and report back.

 

[gilbadon]

I am at work too, no worries. If I am not posing on here frequently... I am not at work lol.

 

[camason86]

Lol. Agreed.

 

[camason86]

So I played around with the sharpness setting without any luck. I uploaded a short video to try and better demonstrate what the issue is. Have a look here: http://youtu.be/15u3NxrE4fo

 

[gilbadon]

And this is happening in games other than ESO? It seems to be affected much more by horizontal movement than vertical. I could not find drivers for the monitor online which is odd. Sometimes monitor drivers are necessary because windows will not auto install them.

 

[camason86]

Yeah, happens in all games. Though it is most apparent in certain scenes in ESO, such as the one I shot. I can actually notice it on this web page if I scroll up and down. The grey bars between each of our posts get darker and lighter as I scroll. And yeah, it is definitely more noticeably with horizontal movement than vertical.

My PC recognized the BenQ automatically, but I haven't actually installed the drivers from the disc that came with it. Going to give that a try now. Thanks again for the help.

 

[gilbadon]

Go into your monitor settings and disable DCR (dynamic contrast ratio).
Picture Advanced > Dynamic Contrast > Set to 0 (I believe that turns it off lol)

 

[camason86]

Installed the driver off the disc - no difference.
The Dynamic Contrast setting doesn't make a difference either (default is 0 which is where it already was).

 

[gilbadon]

Damn, I thought the DCR was going to be it =(. Hmmm

 

[camason86]

Yeah it seems like DCR could have been it, but unfortunately not. Just switched back to DVI from HDMI just in case but no.. still the same.
I'm thinking it's either just how this monitor is, or I happened to get a defective one. I've contacted the store I bought it from to see about exchanging it, so we'll see how that goes. Until then I'll keep messing around and try to just live with it. If you have any other suggestions they are always welcome

 

[camason86]

After a bit more testing I can safely say that this is just ghosting or motion blur. It's noticeably less when AMA is set to High instead of Premium.

I think my expectations of this monitor were a bit off. The advertised 4ms response time, from what I've read, is the fastest measured result. In actual use, the average and max response times are much higher. I'm sure that's the same with any panel type, but from what I can tell a VA panel is inherently slower than IPS. Since the IPS panel I had before was said to have a 5ms response time, I just assumed there wouldn't be that much difference.

It's too bad, because this screen looks awesome otherwise when it comes to colour and contrast. I'm gonna just deal with it for now and keep it in mind for future purchases.

By the way, any suggestions for good monitors? I've tried quite a few within the $250-$350 range. I think I may need to step it up and spend about twice that to get something I'm really happy with.

 

[RCFProd]

I've got an identical monitor today (BenQ EW2440L) and I can confirm this. Ghosting all over the place, the response time, for some odd reason, seems so bad to the point that 60fps looks like 40-45 fps. It's very bad.