RC1 British Engine Hotfix + SLI/Crossfire test

[Winger]

Originally Posted by OB1

For me using alternate frame rendering 2 works best, alt frame 1 gives below average frame rate of a single card and using alt 2 gives me about 3% increase in frame rate, although it seems to appear less smooth.. micro stutter kind of thing. I used track black death to benchmark, average ~34 fps

Everything on uber high, vsync on application settings and nvidia custom set 16x AF 4xAA 4xSuperSample

2xGTX580

Enabled Aero desktop theme for vsync to work correctly.

I figure this hotfix has nothing to do with getting SLI/Xfire to work correctly but just to allow us to run the game when the bridge is enabled and/or allow people with permanent internally enabled SLI/Xfire to run the game.

I think it has something to do with SLI. But i hope its the lacking profile that still keeps from using SLI.
My Summary:

SLI works and gives good performancegain with AFR2 enabled.

SLI Produces INSANE visual tearing.

Visual tearing appears WITH (AFR2) or WITHOUT (FORCE SINGLE) SLI being activated in a manual set up profile.
In order to avoid visual tearing i have to deactivate SLI in the driver itself.

The selected Vsync setting in driverprofile DOES affect Framerate. Thus i get over 100 frames and tearing with AFR2 on and Vsync OFF and 60 Frames with AFR2 on and VSync ON.

Another thing i noted is that clod no longer stretches the picture the the monitorsize. When running 2560x1600 native monitor resolution i get black borders on all sides of the picture when i run the game in 1920x1200 resolution fullscreen set to ON.
So i have to lower desktopresolution to match ingameresolution if i want to avoud playing on something that looks like a postage stamp

Single GPU performance is OK.

Winger

PS: Oh and the driver i am using is the newest 306.63

[OB1]

Originally Posted by Winger

SLI works and gives good performancegain with AFR2 enabled.

SLI Produces INSANE visual tearing.

Thats interesting. Somewhere some how our configuration are different. It would be good to know where. I get no tearing at all, with or without SLI enabled.

1. Try turning vsync to application controlled and allow the game to handle it.
2. If you are running windows 7 turn your aero desktop theme back on.
3. My settings is adaptive vsync enabled in global but allow application controlled in profile.

About your performance, is that related to the track black death ? If not I can also achieve those frame rates but it does not differ enough between single and SLI. In SLI each card load is balanced but only using ~50% or less of each card.

As for some peoples beliefs on blaming Nvidia for not supporting it properly in their drivers, I have to disagree. Given the history of this game and its current condition and Nvidia's available documents and SDKs for adopting SLI gives me the clear answer who's problem it is.

[Winger]

Originally Posted by OB1

Thats interesting. Somewhere some how our configuration are different. It would be good to know where. I get no tearing at all, with or without SLI enabled.

1. Try turning vsync to application controlled and allow the game to handle it.
2. If you are running windows 7 turn your aero desktop theme back on.
3. My settings is adaptive vsync enabled in global but allow application controlled in profile.

About your performance, is that related to the track black death ? If not I can also achieve those frame rates but it does not differ enough between single and SLI. In SLI each card load is balanced but only using ~50% or less of each card.

As for some peoples beliefs on blaming Nvidia for not supporting it properly in their drivers, I have to disagree. Given the history of this game and its current condition and Nvidia's available documents and SDKs for adopting SLI gives me the clear answer who's problem it is.

Enabling Aero and setting Vsync to appcontrolled at least fixed the tearing for me. And i can leave SLI activated in the driver now. With fullscreen and lower than native resolution the Clod picturen now gets shrinked into the top left corner of the screen. Have to lower desptopresolution to gameresolution if i want my screen filled. However SLI doenst gain any performance now. The gain i epxerienced earlier must have been due to the not working Vsync i believe.
Thanks for the advice.

Winger