Input lag and LCD monitors

Thread in 'Hardware' started by aperturegrillz, 15 Feb 2011.

  1. Can someone explain how the hell I'm supposed to play the last half of Death? My consistency is even more of a fucking joke than in shirase. I might have played 1500 games since my 699 record and I haven't even hit 580 once. The game eagerly devours my stack every chance it gets and IRS feels like a lottery. I can't imagine how I'll get Gm like this.
     
    Last edited: 17 Feb 2011
  2. SYN7HOR

    SYN7HOR Drama Queen

    Re: [TAP] Death

    How's your setup? Shmupmametgm? CRT or LCD? Have you optimized your setup?

    I notice a HUGE difference in lag playing on my old CRT and my 40" Sony LCD. I'm not nearly as fast as you, so for you it would make an even bigger difference.
     
  3. Amnesia

    Amnesia Piece of Cake

    Re: [TAP] Death

    I play in quite bad conditions : old laptoop, I feel the lag, more than a lot of other tetris game I have..

    No need to search any technical reason, becoming DEATH GM requiers something I could call "real powerfull controled skill", but becoming MASTER GM doens't need this, you just have to be lucky enough to be born with an easy M ROLL ability, if you are around 20 years old you can learn it quickly.. Then reaching the M ROLL is doable by everybody.






    :sowsuser:
     
  4. Re: [TAP] Death

    A 40" LCD sounds like a TV, which will be laggy, but not because it's an LCD. I play on a 22" AOC LCD, and sometimes a 17" Sony CRT. They feel nearly identical.
     
  5. SYN7HOR

    SYN7HOR Drama Queen

    Re: [TAP] Death

    Yeah, it's an "old" TV, only HD-ready.

    I know there are faster LCD's suitable for games, but I was under the impressiion that lag was a physical problem with LCD technology - that it takes a millisecond or two for the "cells" in the panel to change color. Am I wrong?
     
  6. Muf

    Muf

    Re: [TAP] Death

    http://www.anandtech.com/show/2803/6
     
  7. SYN7HOR

    SYN7HOR Drama Queen

  8. Muf

    Muf

    Re: [TAP] Death

    Maybe you need to read the article again if that's your conclusion :sneaky:
     
  9. Amnesia

    Amnesia Piece of Cake

    Re: [TAP] Death

    I hope I will still be alive when we will have the possibility to play TGM without joystick, only with our brain connected to the game by optical fiber.
     
  10. SYN7HOR

    SYN7HOR Drama Queen

    Re: [TAP] Death

    Why don't you just answer the fucking question before posting some 2 hour read? Posting links is not what I call discussion. Twat.

    I just read through it quickly and read the part where they actually compare CRT vs LCD (which we were discussing), and they come to the conclusion that CRT has a slight edge on LCD, especially when cranking up refresh rate.

    Obviously you disagree, so might I ask, what is you position on this issue?
     
  11. Muf

    Muf

    Re: [TAP] Death

    :colbert:
     
  12. SYN7HOR

    SYN7HOR Drama Queen

    Re: [TAP] Death

    ?

    Does anyone else has any input regarding the CRT vs LCD issue? Are new LCD's as fast as CRT's?

    And what about OLED's?
     
  13. Muf

    Muf

    I don't appreciate being called a twat.
     
  14. SYN7HOR

    SYN7HOR Drama Queen

    And I don't appreciate being called a fucking idiot, even if you said it in you own smug way.

    I use Google too you know. I can find long articles on this issue aswell, but as this is (supposed to be) a discussion forum, where members contribute with their own, already processed and interpreted information. Therefore I wanted to know whether NEW LCD's are comparable to CRT's. In the past LCD's have been complete and utter shit, and this is not debatable. I know new LCD are better than the old ones, but what I really wanted to know was wether the LCD technology is inherently laggy as opposed to the CRT.

    I have tried 3 LCD's and all have them have been VERY laggy compared to my 120 hz CRT. I don't test with vsync obviously. You say I am wrong. I ask why? Posting 5000 word articles is fine, if you use them to reaffirm your position and clearly point out what part of the article is interesting.

    What kind of smiley will you offer me now?
     
  15. Muf

    Muf

    Of the very thorough 7-page article, I linked to the single page that shows all the relevant results and is mostly filled with YouTube embeds. I thought the current generation of attention deficit internet users could at least muster up the patience required to view YouTube videos that are 9 seconds long. If that's too much for you, I would recommend getting a prescription for Ritalin.

    Anyway, to digest the information even further: the article states that they used a lower resolution for the screen and a higher camera frame rate, which would cause the results to be (and I quote) "a little lower" and "reduced our worst case and average performance". The results being 35ms for the CRT versus 37ms for the LCD. Averages don't mean anything; as this is a test from keypress to display update, the instance you press the key will wildly vary your average result, depending on at what moment in the game loop the keypress occurs. As the author writes, "it's clear that the LCD is capable of input latency as low as the test with this CRT".

    So, the conclusion from that is that TN switching technology has come a long way in the past years and there is no reason to discriminate a display solely on the grounds that it's an LCD. The biggest culprits in display lag are image enhancement, pixel resizing (non-native res), and overdrive circuits (necessary for PVA and IPS screens), all of which are currently implemented in the monitor firmware as a framebuffer which will actively wait until having received a full frame's worth of data before processing, and displaying it.

    Now if you could refrain from completely unnecessary rudeness next time, I might be tempted to take the time it takes to write a post like this right away. A simple "Oh? How did you reach your conclusion?" would've easily sufficed, rather than name-calling. If you feel cranky or had a bad day, nobody is going to mind if you wait a day before writing a reply - but people are going to mind if you willy-nilly start insulting them.
     
  16. Re: [TAP] Death

    A study using single monitor for each type is a poor test and is fairly meaningless, regardless of what the results actually say. Demonstrating that one LCD screen is more or less laggy than one CRT screen wouldn't really show anything.

    You can get decent LCD monitors which have an extremely fast response time and good refresh rate, and you can get crappy ones which add huge amounts of input lag. I would say the only real comment on the debate is that some LCD monitors (mostly TVs being used as monitors) will add considerable rendering lag, and that some won't (as stated by TWF).
     
  17. Here's how I look at it: You can look on Craigslist and get a free 21 inch CRT with no lag, or you can spend ludicrous amounts of money trying to get a nice lagless LCD. I tend to go for the former.
     
  18. I don't know anything about milliseconds of lag or anything like that, but the problem I tend to have with LCD displays (and I am currently having less of an issue than ever before) is the way the image feels to look at, so to speak.

    When doing typical things like reading, or doing work in some relatively calm application (Windows UI, Ai, some 3D-application, you name it) its fantastic. Couldn't be more pleased with clarity, the stable picture, the colors, whatever. But when I really have to concentrate on tetrominos or something with high contrasts in a game environment I will eventually have a sensation that reminds me of looking at the sun by mistake or something like that, and I will have an impulse to look away. Usually that will only take a couple of minutes to occur.

    The contrast and brightness settings are nothing special, and this doesn't happen with a CRT as far as I have observed on myself.

    Can anyone relate to this at all?
     

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