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Does input lag vary with resolution?

B

bw31

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Aug 24, 2006
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Does a monitor's input lag vary depending upon what resolution you run? Does it matter if you're running at native verses non-native resolutions?
 
You get more lag at non native resolutions, because the image has to be rescaled for every frame. You get more lag with increasing resolution because there is more pixels to address/refresh.

There may be some exceptions to this, but it is generally true accross all LCDs.

Dave
 
daveswantek said:
You get more lag at non native resolutions, because the image has to be rescaled for every frame. You get more lag with increasing resolution because there is more pixels to address/refresh.

There may be some exceptions to this, but it is generally true accross all LCDs.

Dave
Click to expand...


That part is wrong, input lag is the time it takes the pixels to respond to the signal, it has nothing to do with the number of pixels.
 
It does on the NEC 2470WNX. Its been tested at 2 frames in native resolution, and at 3 frames in interpolated resolutions, even at 1:1.

Whether other monitrs are the same, I have no idea.
 
Yes. Take my XHD3000 for example. At the native resolution of 2560x1600, the input lag isn't that bad, noticeable, but not that bad. However, at any other resolution it's really bad.

Now, even with my computer (which except for maybe the CPU is pretty high end), it's hard to run newer games at 2560x1600. I can do it fairly well with CoD4 but there are times when it slows down during multiplayer during a face off with someone, causing me to die.

I've been running at 1600x1200 lately and I've been trying to learn how to play with the input lag.
 
TheGooch69 said:
Yes. Take my XHD3000 for example. At the native resolution of 2560x1600, the input lag isn't that bad, noticeable, but not that bad. However, at any other resolution it's really bad.

Now, even with my computer (which except for maybe the CPU is pretty high end), it's hard to run newer games at 2560x1600. I can do it fairly well with CoD4 but there are times when it slows down during multiplayer during a face off with someone, causing me to die.

I've been running at 1600x1200 lately and I've been trying to learn how to play with the input lag.
Click to expand...

If you use your video card's scaler instead of your monitor's, it'll fix that. You'll still get the standard "native res" lag, but not the increased lag you're feeling at 1600x1200.
 
bw31 said:
Does a monitor's input lag vary depending upon what resolution you run? Does it matter if you're running at native verses non-native resolutions?
Click to expand...
It depends on the monitor. I've found on most monitors, it doesn't matter. The Samsung 226BW and the Planar PX2611W have no significant lag regardless of the resolution.
 
EW27 said:
If you use your video card's scaler instead of your monitor's, it'll fix that. You'll still get the standard "native res" lag, but not the increased lag you're feeling at 1600x1200.
Click to expand...

I wish there was an option to turn off the scaler in my display, but there's not.
 
I think input lag only varies with the resolution when scaling is done in hardware on the monitor. I have never had input lag problems with any resolution on my setup. Then again my 3007WFP has no scaler and all the scaling is done with the NVIDIA drivers.
 
TheGooch69 said:
I wish there was an option to turn off the scaler in my display, but there's not.
Click to expand...

Go tgo nvidia's contol panel, under display find change flat panel scaling. Make sure "use my display's built-in scaling" is not checked
 
hmm I'm gonna try this scaling trick with my 2232bw. I always though it was better to have the lcd scale it as it was the default w/the Nvidia driver.
 
rinaldo00 said:
Go tgo nvidia's contol panel, under display find change flat panel scaling. Make sure "use my display's built-in scaling" is not checked
Click to expand...

I will give it a shot. How will this disable my displays scaler though? Wont it cause both the nvidia drivers and my displays scaler to be turned on?
 
TheGooch69 said:
I will give it a shot. How will this disable my displays scaler though? Wont it cause both the nvidia drivers and my displays scaler to be turned on?
Click to expand...

no because once the video card is scaling it the lcd will think it's native res. the data comes from the video card obviously so it gets to work with the image first.
 
j0j081 said:
no because once the video card is scaling it the lcd will think it's native res. the data comes from the video card obviously so it gets to work with the image first.
Click to expand...

Awesome I can't wait to go home and try it out. Thank you!
 
j0j0 do you actually feel input lag on your bw? because it might have a bit less input lag using nvidia but it will look awful... so id recomend sticking with default settings for 226/2232 displays
 
vick1000 said:
That part is wrong, input lag is the time it takes the pixels to respond to the signal, it has nothing to do with the number of pixels.
Click to expand...

You are right by your definition of input lag. I was not refereng to one pixel. The more pixels a display has to update the longer it will take to complete one frame. The difference is hidden by the larger lag introduced by scaler chips, because they make lower resolutions much slower.

To me input lag is the time it takes the hole system to react to input from the user.
the reason people talk about it is because they feel it effects their ability to kill or be killed in fast action games. For that you have to inclued everything, not just the pannel.

I will admit I am somewhat biased, because of my experience with a Gateway XHD3000 it seemed slow even at native resolution. I attributed that to the size of the pannel, but it could be that the scaler never really disengages or there are other issues with that display.

If I were gaming competitively, I would use my trusty Sony CRT.

Dave
 
Again the Dell 3007WFP and 3007WFP-HC don't have any input lag that I've ever noticed. I've been an avid CRT guy for some time and only make the switch to LCD about a liitle more than a year or so ago. Again the Dell 30" monitors (excluding the 3008WFP) have no scaler hardware and this is likely the reason why they are as fast as they are.

It is just a matter of getting the right display.
 
j0j081 said:
no because once the video card is scaling it the lcd will think it's native res. the data comes from the video card obviously so it gets to work with the image first.
Click to expand...

Doesn't work. No matter which option I select after I press apply and then yes to "would you like to keep these settings" the control panel selects "use my displays built-in scaler" automatically.

So basically I am being forced to use my displays scaler no matter what. <sigh> :rolleyes: :mad:
 
TheGooch69 said:
Doesn't work. No matter which option I select after I press apply and then yes to "would you like to keep these settings" the control panel selects "use my displays built-in scaler" automatically.

So basically I am being forced to use my displays scaler no matter what. <sigh> :rolleyes: :mad:
Click to expand...

The driver isn't supposed to do that. If you haven't already I'd update the monitor drivers and see if that helps. It has helped for me in the past.
 
TheGooch69 said:
Doesn't work. No matter which option I select after I press apply and then yes to "would you like to keep these settings" the control panel selects "use my displays built-in scaler" automatically.

So basically I am being forced to use my displays scaler no matter what. <sigh> :rolleyes: :mad:
Click to expand...

Don't worry, thats most likely your Nvidia driver. A couple of driver versions ago (169.21 I think), it worked fine, but I just noticed it no longer works right on 169.25. If you want to make sure, you could always install an older version and see if it works, but let's hope Nvidia will fix it with the next release.

You can also try uninstalling your monitor driver and see if it works with the generic Windows driver...or install newer version of the monitor drive if available.
 
j0j081 said:
hmm I'm gonna try this scaling trick with my 2232bw. I always though it was better to have the lcd scale it as it was the default w/the Nvidia driver.
Click to expand...

It may be better as far as image quality to use the monitor's scaler if you have a high-end monitor. But using the video card scaler will eliminate the extra lag caused by interpolated resolutions.

As far as quality goes, try it both ways and see which one looks best. On my ViewSonic VP2130b, they looked equally bad. ;)
 
Thanks for the suggestions but I hate fiddling around with drivers cause no matter what I do I always fuck something up and create a huge headache and end up getting nowhere. I'll wait till next drivers set come out and see.
 
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