Awesome share! Yes generally a single strong gpu should work best. The core problem with sli/cf is in game engine support. Recent articles Unity 5.4+ & Unreal 4 have built in support. Where as game devs that use their own custom engines may not support it well or at all.
As one article mentions alot of game devs don’t like having bits in their games that they have no real control of (gamewerks/vrwerks & liquidvr)
My 1080 gtx (not a TI, not overclocked, cheapest one) handles all this with stable 60 fps. AA on medium, everything else on medium/high, shadows disabled, piplay supersampling 1.25
i’m pretty sure it looks better then AA low (try to set this higher, at least at medium) and supersampling makes the picture clearer with no color distortion or critical fps drops.
have no idea why wasnt you able to do same with your 1080gtx and why do you set AA on low with a TI… Try to disable shadows, they doesnt really looks great in VR but takes a lot of gpu power. You must be able to run this on high/ultra high with a TI.
p.s. in-game supersampling isn’t great thing in my opinion, i could barely notice any difference when it was set to 1 or 2.
Thanks industria. Well in PCars 1, there was no in game SS, and MSAA option was locked at off, so I couldn’t change it. Tried AA even at DS2X, fps was really bad. I never got to try PCars 2 with my GTX 1080 since I got PCars after I swapped for GTX 1080 Ti. Probably PCars 2 was better optimized that PCars 1, so it ran better even on GTX 1080.
My PC other specs, i7-4930K 6-Cores OC’ed 4.6 GHz, 16 GB DDR3 2133 MHz, game run of SSD. Anyway I think when it comes to image quality and fps, everyone has different preferences. Just that to my eyes, I think the image looks better with SS maxed out and AA at low, compared to SS 1 AA medium. Tried SS 2 with AA medium, fps drops to 50+
Some how I like the shadows to be at least medium, reflection I’m okay with low. Visual FX, i like them all on except bloom.
Just to share some info I got in reddit about AA and SS
MSAA (Multi-Sample Anti Aliasing) is always cheaper than OGSSAA (ordered grid super sampled anti aliasing, aka super sampling) for the same level of edge aliasing reduction. It uses less memory than super sampling, requires less work from the GPU, and gets better quality for the “sample count”.
The problem is MSAA only anti-aliases geometry edges at the resolution it’s rendering to and that is not the only source of aliasing these days. There’s aliasing from surface shading, there’s aliasing from the pre-distortion, there’s aliasing from TimeWarp. Basically any aliasing that occurs from the result of a pixel shader MSAA can do nothing to solve, but super sampling can.
The other benefit of super sampling over MSAA is it’s more granular. MSAA can generally be 2x, 4x, 8x, or 16x, that’s doing 2, 4, 8 or 16 samples per pixel. Note that 4x MSAA is roughly equivalent to 2x SSAA for edge quality, but you can do 1.5x SSAA and get something that’s close to the equivalent of 2.25x MSAA, plus some added anti-aliasing to the shaders.
The main reason why super sampling is beneficial though is the pre-distortion and time warp. With only MSAA, while it is doing multiple samples when rendering, they get “baked down” to a lower resolution early on and can’t be retrieved easily. When the distortion and TimeWarp is happening it’s being done to an already reduced resolution image, so you’re guaranteed some blurring. Super sampling means everything is at a higher resolution until the very end and the distortion and TimeWarp can work directly with the high resolution image meaning far less blurring.
Another major consideration why I decided to swap out my GTX 1080 SLI was the heat it was dumping into my PC case. My CPU water cooling 280 mm radiator sits on the top, and it taking in all the hot air from the 2 GPUs. Had problem maintaining 4.6 GHz OC stability due to heat, so I normally goes 4.2 GHz The GPU temp was 90C at times.
Now, I’m using the Auros GTX 1080 Ti Waterforce Extreme. If you see my video, the GPU temp goes max around 62C, and my room ambient temperature now 28C, and the GPU doesnt dump the hot air to be sucked up by the CPU cooling radiators anymore.
Indeed the added heat & power usage considerably more with multi gpu configs. The 1080ti you mentioned thats the same branding i think as @Enopho
i thought you changed your cards because of poor perfomance of 1080 in pcars 2, but you was talking about cars 1, my bad )
I like shadows too, but in project cars they lack distance A LOT, like a real LOT. It’s fucking annoying to drive and see how shadows are appearing in couple meters ahead of you from nowhere X_x X_x Thats why i disabled them. They also make picture sometimes too dark and track is much harder too see (on tracks surrounded by trees)
yes they are the same model cards i have. i just tested overclocking one of them yesterday and they can clock at 2.0ghz! and dont cook either… so chuffed!!
Hi Guys,
Sorry to revive this thread but I recently purchased Pcars 2 and experience the same issue’s @adilz has. I got myself a 1080ti and i5 6700k and thought I should be able to nearly max out Pcars 2 as the it only requires a refresh rate of 60/66 Hz depending of which Pimax model.
But I experienced that I had to turn off even more “eye candy” then the guys with the Rift or Vive. Which is really strange as the Pimax needs to maintain 1/3 fps less then the Rift and Vive.
Please correct me if I’m wrong!
So I did some testing with Piplay 2 and SS set to 1.0 I can nearly max out Pcars 2 but everything looks really blurry and not really clear. But a soon I turn on the SS over 1.0 the performance is going south. Even with the “eye candy” turned down to low. The only downside is that Pcars 2 has a VR feature that everything not in you field of view is not going to be rendered, which works fine apart from that the fov is set to low, so you will see the things popping in and out.
This is not the case with PiPlay 2. Also 1.1.92 has a lot more drift.
With Piplay 1.1.92 which uses the steam render I can nearly max out the graphic settings and I tested this with 16 AI opponents in the night and day with weather set to thunderstorm, the results were I had constantly 66 fps with some drops but nothing major.
@industria To apply the the SS settings in PiPlay you need to completely close all Piplay processes, I don’t know if anybody is aware of this.
yes, must be a typo.
No one corrected it, so i thought i had better say something…
cheers
Any options for elite?
Iracing?