3D Vision Blog

A normal user's look into the world of 3D Stereo Technologies

3D Vision Blog header image 2

3D Vision Issue with SLI Setup with 3D DLP HDTV and Not Only…

January 9th, 2011 · 14 Comments · GeForce 3D Vision

Here is an interesting issue being reported by Jacob Pederson about using a SLI setup along with a 3D DLP HDTV and 3D Vision for stereoscopic 3D gaming. Jacob has dual GTX480 in SLI with a Mitsubishi WD-60735 3D HDTV and reports he is having the issue with a slight delay between the image displayed for the left and right eye with SLI enabled while when the SLI is disabled the issue is gone. And this issue has been present for a while now and is still there even with the latest drivers. You can easily spot it with Starcraft 2 as on the example video posted here and you can easily test on your system to confirm, moving the cursor in the menu should be visible as a single image and not leave trails as the cursor is rendered in 2D in the menu, however with SLI enabled you can see that there is a trail after without the glasses. When you put on the 3D glasses you will not see trail, but the cursor will feel weird as the trail is actually the image for the second eye that is being displayed with a slight delay. Other easy to spot places in StarCraft 2 are the green loading bars, the spaceship dropping your marines in the first campaign mission etc. These are easy to spot when not wearing the glasses, but when you wear you will feel that something is wrong with the picture and it will be uncomfortable, although you will not be able to spot the problem as when not wearing the glasses. The reason for that is that the difference between the image for the left and for the right eye is interpreted by the brain in order to create the depth feeling and if things are messed up like this, then the brain cannot properly build the depth for the scene…

Now, normally this issue is not present if you are using an HDMI 1.4 3D HDTV for stereoscopic 3D gaming along with 3DTV Play. That is if you are playing in 720p 50/60Hz mode, but apparently it is present in the 1080p 24Hz 3D mode or there is something that is creating similar effect but less apparent when using the 24Hz mode for gaming. That needs some more testing, but you can more easily spot the disturbing effect in StarCraft II and Bioshock 2 for example. When using 3D Vision normally with SLI there is no such issue present, that is when you have StarCraft 2 running in Fullscreen mode, but if you switch the game to Fullscreen (Windowed) and voila, you get the same strange delay with SLI that Jacob has shown on the video above, but you get it with a 3D Vision and a 3D LCD monitor. You are also welcome to try that and report your findings.

Tags: ·······

14 responses so far ↓

  • 1 josh // Jan 10, 2011 at 05:58

    this may help http://nvidia.custhelp.com/cgi-bin/nvidia.cfg/php/enduser/std_adp.php?p_faqid=2730

    also, Starcraft 2 is rated as “GOOD” by nvidia in regards to the 3d performance. so you should not really expect much from it in 3d. for example , Crysis is rated as GOOD however I personally think it looks like crap in 3D. the games in the Excellent or 3d vision ready list seem to be the best for the most part.

  • 2 park // Jan 10, 2011 at 14:13

    hi Bloody ^^
    do u know abot this problem ?

    if u have a chance to use 3dtv then check this issue plz

    in my thought dx10 and dx11 is not perfectly work with 3dtv

    and thx always for ur good info

  • 3 Bloody // Jan 10, 2011 at 14:22

    Park, it would be helpful if you post a video with the issue in order to compare what you are getting. Also have you tried forcing vsync and triple buffering through the Nvidia driver?

  • 4 park // Jan 10, 2011 at 14:50

    yes ofc whay not :)
    i always using vsync

    plz tell me ur email address
    then i will send it to u
    but only 1 problem i have
    there is no application which can capture of dx10 or dx11 game play
    the only way to show it to you is using my digital camera
    anyway i will send it to u if u give ur email address

  • 5 Bloody // Jan 10, 2011 at 15:32

    You can upload it on YouTube and post the link here or use the contact form on the website, you should record it with a camera and not capture it with a video recording software.

  • 6 Mathew Orman // Jan 10, 2011 at 17:26

    DirectX does not support quad buffer operation in windowed mode. Try OpenGL games if you have QUATRO card.

    Mathew Orman

  • 7 Jacob Pederson // Jan 13, 2011 at 14:22

    Thanks for getting the word out on this! Since you linked my video, I’ve picked up a confirmation from another nvidia forum user that this lag effects quad sli + (non1.4) hdmi also. It is such a tricky issue to track down, and effects such a small subset of users that I’ve only been able to get three confirmations total.


    I’m not in windowed mode, and I’m using a GTX480 sli setup :)


    This lag does not only effect Starcraft 2, but all games, including “3d vision ready” ones. The only available work around is to disable sli, or toss out the $1500 dlp on the rubbish heap :(

  • 8 photios // Jan 13, 2011 at 18:21

    This issue is present in ALL directx 9 games, none accepted that I know of. And the exact same effect is present when you watch Blu-Ray 3D.

    I cannot reproduce the problem on Direcx 10 games or games that use Directx 11 where my card defaults to Directx 10: Battlefield Bad Company, Aliens vs. Predator, Gears of War, and Bioshock 1 & 2.

    I have QUAD SLI, and the problem goes away when you turn that off, so the problem is connected to SLI but not necessarily multi-GPU, since one GTX 295 works fine.

    It is an incredibly frustrating problem.

  • 9 Darryl // Jan 18, 2011 at 00:03

    Glad to see I’m not the only one with this issue.
    I run two gtx 285 in sli, 3d mkv’s are all not rendered properly. I have a Samsung 61″ 3d ready lcd-dlp rear projection TV. When I turn sli off movies are rendered fine and games look perfect. With sli on 3d movies are jittery and the depth is wrong. Most games are not as noticeable but still not right.
    My questions is how do we get nvidia to fix the issue?
    I tried other drivers and resolutions but nothing makes a difference.

    “I have QUAD SLI, and the problem goes away when you turn that off, so the problem is connected to SLI but not necessarily multi-GPU, since one GTX 295 works fine.”
    The thing with the 295 is yes it has 2gpu’s but it is a all in one card and dose not use sli. So the problem must be sli related.

  • 10 jacob pederson // Jan 21, 2011 at 18:22

    This issue is still present in CD 1.45 with driver 266.58. Have received an official response from Nvidia stating that they are aware of the issue though.

  • 11 jacob pederson // Jan 21, 2011 at 18:24

    Also, as Photios mentions above, we have multiple confirmations, including myself, that this does NOT effect dx10 or dx11 games.

  • 12 Jacob Pederson // Mar 14, 2011 at 21:19

    Andrew has just posted a reply on my Nvidia thread here


    stating that he has flagged the issue with QA and they will try and reproduce the issue in house. I updated him with your info on how to reproduce the effect on a regular LCD monitor. Apparently Andrew forgot about the first time we informed him on this, but hopefully we’ll see some action on it soon!

  • 13 photios // Mar 15, 2011 at 18:04

    Yeah I’m a little more than frustrated that they haven’t already reproduced this problem and didn’t take us more seriously and get it resolved the first time around. The question is: what the heck did they implement into the 260 series driver that broke this in the first place? This issue was not present in 258.96.

    And it’s high time they got QUAD SLI working with 3D Vision and directx 9. I have no reason to upgrade to GTX 580 SLI. The upside is too small of a performance upgrade for the money. This is just shear lack of attention in getting QUAD SLI working.

  • 14 NEVdD // May 10, 2011 at 22:33

    I just got a second GTX470 to play in SLI

    First I learn that you can only use two screens in SLI, great improvement, I had three of them with a 8600 as a second card.

    And then I try Mafia 2 in SLI and the delay between the two eyes makes me sick in 5 minutes… With no SLI I support 3D vision perfectly I can play all day…


Leave a Comment