33 réponses à ce sujet

[velocd192]

Reading lots of reports that SLI is still broken; horrible FPS, stuttering, etc. at "Very High" video quality. Even those using the Nvidia beta drivers that supposedly added SLI support.

When can we expect DirectX 11 SLI support?

[FearCain]

It is 99.9% likely due to drivers from nVidia, which means we need nVidia to work/fix it and obtain a SLi profile for us.

Look into nVidia Inspector and research "how to force SLi" properly. Does the same thing nVidia developers do.

Alternatively, try the old nasty method of taking a DX11 title such as Dirt2, and renaming the DA2 executable to dirt2.exe (whatever its supposed to be.)

[gren77]

Couldn't use "Very High" settings @ DX11. Went back to DX10. Works fine (short of 8XAA, 2XAA is acceptable) though outdoor areas are a bit slow.

(GTX 580 SLI for your reference)

[FearCain]

A number of people have suggested turning off SSAO, its the more advanced Ambient Occlusion, and it greatly improves performance. Possibly a driver bug for nVidia, or even the game itself.

I haven't tried the demo, and two more hours till unlock, but I am assuming its a simple ON or OFF.

If that is the case about being On or Off, then nVidia Control panel can force Ambient Occlusion On.   It wouldn't normally make much difference, except the fact that the Control Panel has three AO settings: Off, Performance, and Quality. I would try Performance and see how it goes. It gives you nicer lighting and shadow, but not the extreme SSAO.

Also, you should verify both GPUs are getting 100% utilization from a 3rd-party application, such as GPU-z or MSI Afterburner.  A second GPU at 0% is simply not properly being utilized.  An issue where one card is having low utilization is usually a driver glitch.  GTX 4xx/5xx also have a few games where we have two cards (or more) stuck at 45~65% no matter what.  Again, we would have to either find a hack/trick or wait for nVidia to fix.

Modifié par FearCain, 08 mars 2011 - 07:04 .

[Psychoeva02]

the 267.24 drivers do have the DX11 SLI profile setup for Dragonage2.exe :

Profile "Dragon Age 2"
ShowOn GeForce
ProfileType Application
Executable "dragonage2.exe"
Setting ID_0x00a06946 = 0x000000f5 <-DX11
Setting ID_0x1033cec1 = 0x00000003
Setting ID_0x1033cec2 = 0x00000002
Setting ID_0x1033dcd2 = 0x00000004
Setting ID_0x1033dcd3 = 0x00000004
Setting ID_0x1095def8 = 0x42400005
EndProfile

Modifié par Psychoeva02, 08 mars 2011 - 07:07 .

[FearCain]

Then verify that the game .exe that Dragon Age II shipped with matches the name exactly, and like I said in previous post, use GPU-z or MSI Afterburner to record how much utilization or performance level each video card is running.

Although a pretty game, I don't see how this game could eat up two GTX 580s.

Edit:
Found a post from someone on nVidia Forums having 3-way SLI with GTX 480s, and only having 40~50%.
nVidia Forums

Modifié par FearCain, 08 mars 2011 - 07:10 .

[FearCain]

Sorry for the double post, I just remembered having the low GPU usage issue in World of Warcraft when Cataclysm came out.

I disabled SLi temporarily till a fix came out and it actually increased performance. Not something people want to hear, but if performance increases under one card thats a start at least.

[Flocons de Mais]

I'm currently running those drivers and the latest nVidia profiles. It seems that both my video cards are maxing out at under 50% (47% - 50%). I've got the hi-res pack installed, and running everything on maximum. I agree - it is a very nice looking game, but it looks like my 2 x 580s are also chugging along at ~20fps or so. Not really playable for me - :\\

[FearCain]

Flocons, can you test with VSYNC On vs Off? I know that Vsync can limit the GPUs utilization quite a bit, especially if the game was coded to be locked at 30 fps for Vsync.  Perhaps also test with SLi disabled in the control panel as well for a comparison of before and after?

What are you using to see FPS, Fraps or something else?

For others that don't know what the issue is, its pretty much the more you tax your GPU with eye candy and high resolutions and anti-aliasing, the higher your GPU utilization, its normal to see a game using 99% of your cards performance.  I would expect about Dragon Age II to be at 99% easily.

Some of us nVidia users who have SLi have noticed that there will be really bad performance and that the total USAGE is around 100% distributed over two cards, when it should be 99% on both cards.  Not sure why this happens, some games never get fixed, but most do.  From my experience I have seen this issue fixed by new drivers, but perhaps someone from Bioware could also look into this.

Suddenly I am not looking forward to playing.

Modifié par FearCain, 08 mars 2011 - 07:35 .

[Flocons de Mais]

Going to go test right now....I'm not using FRAPS right now, just eyeballing (all these years of gaming should amount to some decent sense of fps, right? . Will be back soon.

[Psychoeva02]

Check your CPU usage on how many threads its using, if BW didnt implement the multi-threaded render instructions DX11 offers, then the CPU is bottle-necking the GPUs instructions it needs for all the extra DX11 eye candy, Im still waiting for the DRM release date crap so cant look myself.

Modifié par Psychoeva02, 08 mars 2011 - 07:35 .

[Flocons de Mais]

Ok..just did a quick little run around first with SLI disabled, and then that combined with vSync disabled. There could be some difference in framerate, but nothing my eye could detect. Either way, the "gaming experience" remains the same. There is also that annoying stutter (pulsing?) issue when I use the keyboard to move the character, which doesn't help the experience either.

[FearCain]

Psychoeva02 wrote...

Check your CPU usage on how many threads its using, if BW didnt implement the multi-threaded render instructions DX11 offers, then the CPU is bottle-necking the GPUs instructions it needs for all the extra DX11 eye candy, Im still waiting for the DRM release date crap so cant look myself.

This is very true, although this wouldn't be an issue for me per se, but it could for many others.

Flocons, when you are done looking at the stuff, it wouldn't hurt to see task manager opened, then enjoy some of the game, and then exit out or alt+tab to look at those CPU graphs to see how many threads were getting utilized.

I am assuming you are at least on a quad-core, and in the range of 3.8~4.2 GHz, and if Intel, HT on.

Flocons de Mais wrote...

Ok..just did a quick little run around first with SLI disabled, and then that combined with vSync disabled. There could be some difference in framerate, but nothing my eye could detect. Either way, the "gaming experience" remains the same. There is also that annoying stutter (pulsing?) issue when I use the keyboard to move the character, which doesn't help the experience either.

You have keyboard input lag (push a key response seems half a second later)?

Modifié par FearCain, 08 mars 2011 - 07:41 .

[Flocons de Mais]

@ Psychoeva02, FearCain

Just did the CPU test.....I've got an i7 930 @ 3.2 GHz, so it's got 4 Cores + HT (8 x Cores in OS). It looks like it's using cores 1, 3, 5, and 8. They hover at around 20 - 30. I don't think the CPU is the culprit here. I'm willing to put my money on drivers. I think all we can do for now is wait.

[Flocons de Mais]

FearCain wrote...

You have keyboard input lag (push a key response seems half a second later)?

It's not a lag, per se - If I hold down W to move foward, the screen pulsates forward, (imagine holding down you gas pedal in your car at the same time as your brake, and every half second, ease off on the brake).  That's the best way to describe it.

However, if I hold LMB and RMB down at the same time (another way to move foward), I get a more consistant motion forward.  

[FearCain]

This sounds like a-typical new game release, low Fermi usage to me. Sigh. I think I will go to bed and not play at 3am.

Not going to enjoy 20fps.

[FearCain]

 Hey Flocons, check out your DPC Latency in game, just sitting idle on the desktop, and sitting on desktop but typing.  Watch the graph while you do the second two.

Edit: Sorry forgot to say before I go to bed, a high dpc latency in game would be a conflicting driver via HIDs (mouse/keyboard), gpu drivers, or even audio drivers are overall causing mayhem.)

Sitting idle should produce very low latency.

Typing should see if there is an issue possibly with the keyboard driver.  Believe it or not, fancy/expensive keyboards are prone to software / driver problems are rarely updated (Razer/Steelseries comes to mind.)  If you have an issue here, I would suggest an alternative keyboard to test it out or if you have Razer software like I do uninstall the software, and the keyboard driver in Device Manager, and then just reboot.

DPC Lat Monitor

Modifié par FearCain, 08 mars 2011 - 07:56 .

[Flocons de Mais]

Latency seems pretty good...Doesn't matter what I'm typing, it's all in the green (looks like 250us or under). I've got the Razer lycosa, which is supposed to be pretty low latency, so I think I'm good there.

[FearCain]

Strange about the keyboard jerkiness.  Possibly a separate issue, I will sleep it on it.

ALSO, I cheated since I have an EVGA motherboard I have access to all their software goodies, one of them I learned about is the SLI Enhancer.  They have a custom DA2 Demo profile but it also includes the standard DA2 in the profile (you can see it in the profile.)

Supposed to add better (patched) profiles than what nVidia releases from time to time.  Comes with instructions, but simply install it over the matching forceware drivers (or whatever drivers you want really) to use it.

I hope I help someone out tonight.

SLI Enhancer

Modifié par FearCain, 08 mars 2011 - 08:10 .

[Psychoeva02]

K i got the game running at 40fps~ with DX11 Very High 4xAA/16xAF Hi-Def Textures On, SSAO, DoF, Blur off with SLI 480s. Still looks pretty good. The tessellation atm is a bit distorted and may be the issue so probably driver issue to be fixed soon.

[velocd192]

Flocons de Mais wrote...

It's not a lag, per se - If I hold down W to move foward, the screen pulsates forward, (imagine holding down you gas pedal in your car at the same time as your brake, and every half second, ease off on the brake).  That's the best way to describe it.

This is the exactly what I'm experiencing. I have TRI-SLI GTX 580 and have this weird motion stuttering when using "High" or "Very High" video quality settings in-game for DX11.

According to Fraps my FPS in-game on "Very High" is above 30, but the motion stuttering makes it feel like FPS is 5.

I tried other input devices, it has nothing to do with input. I tried EVGA SLI Enhancer DA2 profile, didn't help. I'm using Nvidia beta drivers 267.31.

Control panel settings:

Ambient Occlusion: Off
Anisotropic Filtering: Application
AA Gamma Correction: Off
AA Mode: Application
AA Setting: Application
AA Transparency: Multisample
Maximum Pre-Rendered Frames: 3
Multi-display/mixed GPU acceleration: Single display
Power management mode: Maximum
SLI rendering: NVIDIA Recommended
Anisotrpic sample optimization: On
Negative LOD bias: Allow
Trilinear Optimization: On
Threaded optimization: Auto
Vertical Sync: Application

I've tweaked nearly every in-game and Nvidia Control Panel setting.

GPU utilization according to MSI Afterburner is 50-60% while playing:
http://img845.images...45/8306/da2.gif

Here is a YouTube video I made from Fraps demonstrating the stuttering. First video is "Very High" quality with stuttering, second video is "Medium" quality with no stuttering.

Modifié par velocd192, 08 mars 2011 - 04:53 .

[Nigawatts]

It looks nice until you see the framerate. I'm gonna test the beta drivers and see if they help, but it looks like I'm either going to have to turn off SLI or run the game at lower settings. Both seem a pain.

Running MSI Hawk GeForce GTX 460 (Fermi) x2

[Flocons de Mais]

Just wait a bit until nVidia comes out with drivers....There is no way this game should be destroying GTX 460 rigs, not to mention dual and tri-SLI 580 rigs. There's simply not enough eye candy to justify it.

[Flocons de Mais]

*Edited* Double post.

Modifié par Flocons de Mais, 08 mars 2011 - 06:23 .

[Bootblack]

Beta drivers did help to utilize the 2nd GPU but the performance is still very poor.
Getting about 20-25 fps with a Gtx480 sli is ridiculous.