It is because the Windows 8.1 drivers for AMD is terrible and woefully unoptimised for the game while Windows 10 drivers are optimised for the game. It just show that AMD hasnt optimised their GPUs for pCARS on 7 and 8. It is the same reason why a similar AMD card performs so bad compared to nVidia because the drivers are badly optimised.

Heck, pCARS doesnt even runs on DX12, it runs on DX11 regardless which OS you use while benefits of DX12 are ignored by the game because it isnt designed for it.

AMD has a long history of shoddy drivers, I am not surprised to see it happening again.

Right, I have a PC with a 880. I tested it and I get no observable difference when I set PhysX to CPU or GPU. It is 30+ fps on pits which is the same for both and it maxed out at 80fps for both setting. I also ran tests on a 755M and I got no observable difference in FPS.

For the 980 SLi, maybe its the SLi profile is bugged? Or it is not supported properly where traditionally, the game has really bad SLi support during development. At the same time, one guy with 980 SLi had issues when the others in the comments seemed to be running the game decently.

The game is designed to run it's physics calculations on CPU while GPU does all the eye candies. What does can PhysX offer to a racing game? What features in pCARS uses so much PhysX when PhysX does not has any features that can be used in a racing game? Cloth physics, goo physics, Hairworks and fancy smoke effects isnt used in the game then Apex Turbulance is canned by alpha. Other than collision that is bound to CPU that uses less than 5% of resources while the other 95% is for AI and physics.

I want to know, what PhysX effects that pCARS uses?



I could not even find this comment in the link while whatever he said contradicts with what SMS said. SMS designed the game to be platform neutral as they want to port the game to as many platforms as possible where using PhysX contradicts with that goal. Did you know there is a build of pCARS that runs on iOS and Android?

This comment is false because pCARS's physics calculations does not use PhysX and it heavily relies on CPU like rFactor 2, AC, GSCE and R3E. What are the PhysX effects added? He did not elaborate. Also, if PhysX effects are added, why cant I turn them off when the game allows has tonnes of graphical options to tweak to the point I can even turn lens flare or god rays off? If a game has intensive PhysX usage, there is always a check box to turn it off, why pCARS doesnt? What about the console builds when PhysX is closed source and cannot be ported elsewhere?

More importantly, what benefits does SMS has to gain for deliberately crippling AMD's GPU's performance?

It would be great if I can repost everything from WMD forums because many people had tested on different hardware where we found that there isnt any observable difference between PhysX on GPU or CPU. Other than r2XX series GPU on Windows 10 and 8/7 where evidently, the AMD drivers are not optimised for the game.

In short, AMD is incompetent. Where are the pCARS optimised drivers that still isnt here after 3 weeks?

Project CARS had sold 1 million.

http://www.wmdportal.com/projectnews/proje...on-copies-sold/

This is probably the best crowd funding game that I had the pleasure to be part of.

It is normal due to the number of light source. You'll lose a lot of frames in rain. I have 760 and I dropped to 35fps in a thunderstorm. Almost every PC configuration uses about 20-30 fps in a rain.

The game uses 2 core solely for your car's physics calculations.

This post has been edited by Cheesenium: Jun 8 2015, 01:29 PM

Fan made video by Jonz.

This post has been edited by Cheesenium: Jun 13 2015, 01:26 PM