The New Definitive HDTV Lag FAQ

Kayin,

JVC I’Art 27"
Purchased early '04
$280 new at the time.

This TV is unquestionably Non-HD.

shouldn’t CRTs have 0 lag?

I just wanna know which TV to get to run 480i,1080p and everything in between laglessly.

That possible?

Sorry, I wasn’t referring to you, I meant SePhoBroth, and my odd results weren’t an attempt to tell you that you were wrong. Sounds like the test is fairly consistant at least.

superlollo: Not HD ones.

Smashbros29: Don’t we all? How can you post so much and read so little?

edit: Just read back a little bit to see that the TV isn’t HD
Either the TV is bad or I was right and RB2 test just fails at CRTs.

Has anyone tried any of the available Panasonic LCDs? looks like the (now unavailable) Panasonic TC-32LZ800 was perfect :frowning:

http://www.avsforum.com/avs-vb/showpost.php?p=16930966&postcount=1014

I’m trying to find out about the ones that are still for sale atm. I might just have to buy and test it as it looks like there is no info around about it.

http://www.avsforum.com/avs-vb/showthread.php?t=1206853

I need some input from knowledgeable people.

I’ve been playing on my Samsung LN32A450 32" HDTV for about 1 1/2 years now. It’s a great television and most people agree that they can’t feel any noticeable delay. I personally haven’t had a problem with it and have been using the HDMI inputs with my xbox 360.

My friends that live about an hour away from me play Tekken very seriously and they are extremely sensitive to any type of lag. In lieu of my friends taking a stand to no longer play fighters on HDTVs I have decided to run some serious tests to really see how much lag was on my own HDTV.

I did some tests that had me worried with the results. I ran a LCD test at http://www.lagom.nl/lcd-test/response_time.php with my CRT and HDTV plugged into my desktop (used vga to dvi plugs). I ran a clone with the CRT as the primary display and the results really depressed me.

*Note that this test was run using 1024x768 resolution. I’m not sure if that affects the lag at all on the HDTV since it’s not native resolution.

I was getting a variable of 2-4 frames of lag according to the video I shot at 60fps. I can’t tell how accurate my testing method is but I wanted to get opinions from other people.

Will running the xbox 360 on a VGA adapter really make it any better? I also wanted to mention that the 360 runs at the tv’s optimal resolution through the HDMI1 port which puts it at 1366x768. This turns off all the possible visual processing that the TV can produce. AKA PC mode.

Here’s the video I shot of the comparison between my CRT and my HDTV. I left it as a .mov because I wanted to keep it at 60fps.

http://upstatefighting.com/glory/hdtv-crt_test.MOV

Now let me say that I’ve extensively played games on both my SD and HDTV and honestly cannot feel much of a difference. I can do everything on my HDTV that I can do on my SDTV including one frame links. I’m a pretty sensitive to lag kinda guy and so are my colleagues online who purchased the same TV set, so I question the results of my own test.
I know there’s lag no matter what on an HDTV, but if there’s more than one frame of lag then it’s no bueno for me.

I just got the TC-L32G1 and while I haven’t done any of the technical lag tests (don’t have a 60 fps camera or rb2 guitar), I haven’t found any detectable existence of lag to be a problem while playing SF HDR.

I might try the TC-L32S1 If it feels lag free enough i’ll see if i can find a crt monitor to test it. I just really hate buying anything without lots of info and i can’t really find any.

You’ve gone through a lot of effort to do whats nearly 2 different tests. To point out the problems with your stop watch test:
-You were right, non native resolution will affect the result. Pop it up to 1280x720 for a more accurate result.
-Some people have reported differences in output timing with clone mode primary/secondary where the secondary adds slight lag.

You dont need the clone test with a 60fps camera. Record a Ryu jab (or any move really) with your finger pressing the button in the shot and count the frames according to frame data. There are examples of it in the past few pages.

great post and effort.

exactly!

that is what experience I had with the LCD vs CRT stopwatch test. Very mix result and very inconsistent.

for instance, the asus evo monitor I can get anywhere from 0 lag to 3 frames of lag using the LCD vs CRT test.

I’ve also done a CRT vs CRT stopwatch test and guess what?? the timer isn’t sync!! I’ve used both graphics card and a VGA splinter and results still varies.

Right now I’m doing the most accurate test. I’m just gonna run a game and hit the button on my stick and sync the footage from the hdtv and the sdtv together to determine the output of lag.

This will should give me a perfect result.

:tup::tup:

here’s an example

http://forums.shoryuken.com/showpost.php?p=8012470&postcount=1870

try to capture when the jab(or any move) does the the hit frame animation.

I asked this before and nobody responded, and I’m wondering if anyone even considered it.

Has anyone considered wiring up an LED light to the button being pressed in order to get a more accurate result like NKI did with the CCC2 lag test?

i got a good video coming up, no need to use LEDs. The angle of the camera shows EXACTLY when the button is pressed down @60fps.

well yeah …but not necessary needed…how about you take the initiative and wire up a LED on a joystick and do the actual test?

Yup, same with my experience…if you point the camera at a correct angle its shows exactly when the button is pressed down.

error should be very minimal due to the result being very consistent, no sudden jump of frames or anything like that.

Plus you can confirm that the camera is shooting 60fps if you compare the # of frames to the SF4 frame data.

Once I have the resources I’d love to, actually. Plenty of people have LEDs on ther sticks’ buttons, so It shouldn’t be too hard.

Question for those with the Asus 23" or 24"

We just got the Asus VW246H for our SFIV set up at the local arcade.

This setup uses the xbox 360 and I am wondering what settings folks with the Asus/360 combo are using? 1080p or 720p on the Xbox? Game mode on the Asus? Etc?

It is my understanding (correct me if I’m wrong) that if the Xbox is set at 720p, the Asus will scale it to 1080p. If the xbox is set to 1080p the Xbox does the scaling(since the game is 720p). I assume the Asus has a fast scaler hence why it works so well with the PS3, but I know the Xbox scales fast too.

I know I should test it but I don’t have the means right now. I’d be interested in some thoughts on the matter, in particular, Shinshoryuken’s thoughts. Thanks in advance!

I got the ASUS VH236H aka the evo monitor. I was shocked when I went to the selection screen in Tekken and picked the character. As soon as I pressed a button it picked my character. When I had my laggy Samsung it took milliseconds longer, I always assumed the game was loading but now I know how laggy my previous TV was.

I took a lot of time today doing a better lag test video. Probably too much, but I hope it’s informative for people here because I learned a lot today.

I actually had the exact same questions. One was answered a few pages back. Let the 360 do the scaling. Set it to 1080p, the monitor’s native resolution.

Still no answer on whether the Asus monitors should be set to game mode or not.

I’m getting a 60fps capable camera for xmas, so I will be able to test the different modes as well as my 42" LCD.