7 réponses à ce sujet

[Circlelessness]

Totally unreasonable given my PC's specs (I can play any game, including crysis, with settings including AA maxed out).

Specs:
6GB Corsair Dominator GT RAM (timing's OC'd)
Intel Core i7 930 3.5GHz OC
2x Radeon HD 5870s (using the new Zalman VGA coolers)
Corsair TX-850W PSU
3x 140mm case fans/4x 120mm case fans/Noctua NH-D14 CPU Cooler so it's not a heat issue.

AA/AF in CCC disabled (let app decide), Cat AI at Advanced, Mipmap/AAMode maxed out.  DAO all settings maxed out, VSync on, 8x AA makes it unplayable (<30fps variable standing still, <20 without VSync), while 2x is a constant 60fps.  Catalyst driver suite version 10.3, I've tried upgrading to 10.4 but all it did was cause DOF to go haywire and a multitide of other issues.  Rolling back to 9.10/9.11 seems like it could help after doing a lot of googling but those drivers sound like theyll fix as many problems as they solve for me.

I don't know what other information to give here, I never post on forums because I prefer to solve things myself by googling and playing around with settings, but I can't figure this one out...thanks for any help.

Modifié par Circlelessness, 22 mai 2010 - 06:56 .

[Circlelessness]

Without VSync on any driver version the game takes a serious performance hit.  I've tried it with crossfire disabled as well as some people do say it helps, but for me it was slower and VSync locked it to 30FPS instead of 60FPS, even worse with 10.4.  I've tried turning off Frame Buffer Effects but it makes the lighting and other things unbearable. 

As for playing with no OC I would prefer abandoning the game, my GPUs are not overclocked, only my RAM and my CPU is overclocked and it's a fairly time consuming process setting up an OC for RAM/CPU, one which involves at least an hour spent on RAM, at least 30 minutes on CPU, multiple reboots (many into the BIOS) as you can't do it from within windows as you would for a GPU.

I did a little more playing around and found these settings to work:

Game
All settings maxed, VSync off

CCC
AA Disabled
AAMode maxed
AF x16
AI Disabled
Mipmap maxed
VSync "Off Unless Application Specifies"
Crossfire on

Gets me ~60FPS with about a maximum of a erratic +-10FPS difference, strangely enough with this combination of settings VSync caps FPS at 30, which is why it's disabled, most likely because its too variated at 60.  Don't get me wrong I'm not looking for more than 60FPS (although I like getting the performance I payed for with my PC), however the issue now is to somehow get FPS close to a constant of 60FPS+ so VSync locks at 60, I wouldn't care but I'm noticing some screen tearing and intermittent micro stuttering (multi-GPU issue), and nobody likes screen tearing, and everybody especially hates micro stuttering (not that VSync solves micro stuttering globally but in Dragon Age when using crossfire and no VSync there is noticeable micro stuttering).  Any ideas?

[Bfler]

Disabled AI in CCC disables Crossfire mode. So your game should only use one of your GPUs.

[Koralis]

Circlelessness wrote...

CCC
AA Disabled
AAMode maxed
AF x16
AI Disabled
Mipmap maxed
VSync "Off Unless Application Specifies"
Crossfire on
).  Any ideas?

What he said.. AI disabled = single GPU, no optimizations.  You WANT optimizations anyway if you're shooting for speed.

AAMode maxed = Super Sampled AA?  SSAA is awesome, but really intensive.  8x SSAA is pretty extreme and it gets worse the higher the resolution goes.   4x SSAA looks better than 8x in any other mode in my opinion, and won't be so brutal. 

[searanox]

Make sure you're running MSAA instead of SSAA, and perhaps CSAA, because SSAA will process a much higher-resolution version of the image than what is ultimately displayed... it makes for higher-quality AA, of course, but it also kills performance unless you're running an older game and you can afford to drop a few frames.



Of course, it's also worth mentioning that it's possible Dragon Age just does not have very good CrossfireX support, and that 8xAA is far more demanding than 2xAA. It's totally expected that your framerate would drop when cranking the AA up, even with a system as high-end as yours.



And, if it's just a driver issue, then most of what I said isn't applicable. Yaay!

[Circlelessness]

Bfler wrote...



Disabled AI in CCC disables Crossfire mode. So your game should only use one of your GPUs.

Haha..seriously? Well I'm an idiot.. . Just one more reason to go back to nVidia after they start making single GPU FERMI cards that out-perform a 5970. I'm missing my GTX 275s already, or rather missing the simplicity and compatibility of nVidias software vs ATIs (nHancer/nVidia Control Panel > CCC any day). Still, it's surprising that I get such insane performance out of just one 5870.



My computer usually handles 8x SSAA fine..



I also feel Dragon Age (and Bioware games in general) has pretty bad Crossfire support and only marginally better SLI support...also, ATIs software is terrible, so there are probably driver issues...

[Draconus Kahn]

Word!