[SLI with 2.5 Caucasus]

SLI still works like a charm. I am using the Dirt Rally 3 profile for my Titan XP sli set-up.

[SLI with 2.5 Caucasus]

Two Titan XP's in SLI are still working great on my rig as well (40% increase in fps in 4k resolution). I used to get flickering of clouds before but not any more. In 4k, single titan XP is definitely not enough to pull 60 fps during low altitude flight over Vegas with TGP and mirrors on. With SLI, no problem~! Both cards exhibit over 80% usage constantly.

[SLI with 2.5 Caucasus]

You have missed some vital information !! What graphics card are you using ?

 

Mizzy

 

Please check my original post above....

[SLI with 2.5 Caucasus]

I suspect with your system that you are rarely getting cpu bottlenecked which allows your SLI to be better utilized. I have great SLI results in NTTR map but parts of the Caucasus map seems to be more cpu demanding. I'm now using the Georgian Hammer 6-2 mission for benchmarking because it seems to "hammer" my system the most and serves as a good worst case bench for tweaking (it has clouds too - which allows me to test for SLI induced flicker)

 

If you get bored, I'd be interested in your SLI vs. Non results using that mission.

 

As I have nothing else to do tonight, I tested the mission.

 

With SLI turned off,

FPS: 43

GPU usage: 99%

 

With SLI

FPS: 60

GPU usage: 80% both cards

I didn't observe any graphic anomalies.

[SLI with 2.5 Caucasus]

I want to share my experience with SLI as it has been working perfectly for me. Here is the specs of my system:

CPU:7700K (4.9Ghz fixed clock)

RAM: 32GB Corsair Dominator Platinum DDR4 (4X8GB, 3200Mhz)

GPU: A pair of Titan XP 12GB

MB: ASUS Maximus VIII Extreme

Display: Asus PA329Q (4K)

 

 

Here is my game settings:

 

I tested SLI with one of the missions included in "The enemy within" campaign (3rd mission "Patrol", starting at Kobuleti) of DCS 2.5

 

First of all, with SLI turned off

FPS: 35~40 while GPU usage stays above 90% all the time

 

When SLI is enabled, (used default Black Shark Nvidia profile and only SLI compatibility setting DX10+DX11 bits was changed to 0x081000F5 (Dirt 3, Dirt Rally)).

FPS: 60 (V-sync on)

GPU usage of both cards hovering btw 70~80%

[SLI with 2.5 Caucasus]

Sorry Gents. I will choose to not believe you. I had an SLI setup and tried all the tricks people said would work and it did nothing. Until ED decides to implement it, your chasing ghosts.

 

Why don't you give it another shot? It is real and recently started to work.

[SLI with 2.5 Caucasus]

Thanks for the feedback BabyPapa. I took your message to mean that you use the default DCS:BS Nvidia profile and only change SLI compatibility DX10+DX11 bits to 0x081000F5 (Dirt 3, Dirt Rally).

 

I just tried that and hit the best fps I've ever seen in Nevada (about 100% boost); however, I still don't see any change in Caucasus terrain - Given the low gpu utilization that I'm seeing on that terrain, something else must be bottlenecking on my rig with that map.

 

Did you press Alt-Enter at the beginning? My GPU usage in Caucasus map is usually around 70~90% in both cards. I guess if SLI works in Nevada, it should work in other two maps as well because they use a same graphic engine. Have you tried repair or fresh install?

[SLI with 2.5 Caucasus]

For me, SLI Titan XP works definately in all three maps of 2.5 version. I'm getting 40% boost on average (near Batumi 50FPS vs 70FPS). I do NOT force SLI, instead I'm using DirtRally3 SLI profile (SLI compatibility DX10+DX11) everything else is default or NVIDIA recommended.

[SLI and 2.0]

With the most recent update,

Sli Titan XP (Dirt Rally 3 Sli profile) allowed me 20~40% more FPS (43 vs 60 FPS roughly) on 4k Normandy map w/ Mirror on / Deferred shade on / MSAA 8X / Maximum graphic settings, while usage of both cards stay around 95%.

In the even much less demanding NTTR map, single titan XP could not pull out +60FPS (my gold standard) when TGP IR and mirror were turned on. SLI definitely helps me to stay above 60FPS in low altitude flying over Vegas on A-10C while enjoying all goodies from IR screen and mirrors.

[[REPORTED]SLI and 2.1 and Deferred Shading]

This bug has been fixed in the new update.

[Sli 1080 ti extreme question]

This is my experience with SLI after recent update

4k resolution all maximum graphic settings with deferred shading on / HDR off / MSAA 8X / V-sync on / Mirror on

Normandy extremely low altitude over a city (don't know its name I just picked the largest urban area in the map, so please excuse my ignorance)

7700K overclocked to 4.9 DDR4 32GB 3200Mhz

Single Titan XP

42~45 FPS

Titan XP Sli (Direct 10/11 SLI profile Dirt rally 3)

Managed to pull out stable 60 FPS

Never tested with V-sync off because I didn't have to. I got a similar result with NTTR map over Vegas. SLI does not make much difference in DCS 1.5 though.

[SLI Problems in 1.5]

Thank you so much LEX15. Yea, it indeed resolved my Nvidia sli issue. Now I always have >60fps even with mirror on.:thumbup: