Recommendations for better multi GPU performance

For those with multi GPU, use the following settings, we're getting very good results with these with Reflections On:

Crossfire - Set to AFR Friendly, don't use the App Profile
SLI - you'll probably have to use nvInspector until we get an updated profile. Find the SLI compatibility bits for rF2 (0x02402005) Modify the bits to 0x82482005. There could be some flashing artifacts but at least you'll get some frames back.

If you're still not getting good frames, disable Env Reflections and Road Reflections, you will get frames back.

 

Cheers Joe, will try soon.

 

What does this change? I ask because I'm trying to understand the capabiliites of the SLI profiles.

 

what does this mean? What should I do? Sorry for the noodishness

 

You have to open the Catalyst Control Center (right-click on desktop), go to 3D gaming options, and at the bottom you can select different profiles for Crossfire. One of them is AFR friendly. Select and apply.

 

and the GTX690?
There is something to fiddle there too?

 

The 690GTX is a dual GPU card set to SLI mode, correct? Follow the procedure for SLI.

 

Thanks Armando will do when i get home

 

Thanks

 

There's no option in the drop-down menu for 82482005...

 

You have to actually edit the number (i.e., type it in). Then hit the Apply Changes button at the top right of nvInspector.

 

Ah -- sorry just worked out how to manually do it.

 

many thanks, i tried it now with my GTX 590, before i had with the Skippy at Lime Rock +-50Fps, with this modified profile, i have 110FPs, fantastic.

 

Thats why I asked. As it came with in built sli, I never did anything to set it up. Donliaded nvInspector and couldnt find any thing related to sli either.

 

Hmmm, unfortunately, this didn't seem to really help my setup (GTX680 SLI). It ran pretty much the same as default and as a result, it is much smoother by completely disabling SLI (otherwise get negative scaling). I double checked the values in nvidia inspector after my tests.

This is the only game that runs much better with SLI disabled. Strange it worked for someone though so perhaps I am missing something

Edit: I am also running 3DVision/3DTVPlay

 

Same for me, two gtx680, too.
Sli enabled -> disable both reflection settings ingame speeds the game up, for max details disabled sli is the best choice.

 

worked very well for me..... two gtx670's

 

Not helped me either -- no discernable improvement in FPS. Running 2 x 680GTX SLI, i7 950@ 4Ghz, 5760 x 1080 resolution over three screens.

FPS on start line at Sebring with Nissan GT-R field of 20 cars: 25FPS. Goes up to 60 FPS on the quietest stretches.

 

Disable both reflection settings in the menu of rf2.

 

And set shadows medium or low