ROTTR DX12

andicole0

andicole0

andicole0

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Has anyone got multi-gpu working with the latest ROTTR patch. I have disabled SLI and enabled DX12 but only one of my GPU's is being utilised.
Andi.
 
Just playing through this game now, single GPU with Dx12 and it lost a lot of frames to make the use of DX12 worth it, so went back to DX11.

I would have thought using DX12 would have helped, I don't understand the full technical spec of DX12 and its advantages but for me ROTR resulted it poorer performance.

Dx12 is meant to make better use of both CPU and GPU - dunno.
 
The DX12 API isn't working great for SLI/Xfire at the moment. Saw a video on it the other day will try to find it for you :)


@3:02 it's explained.
 
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iv-tecman said:
Just playing through this game now, single GPU with Dx12 and it lost a lot of frames to make the use of DX12 worth it, so went back to DX11.

I would have thought using DX12 would have helped, I don't understand the full technical spec of DX12 and its advantages but for me ROTR resulted it poorer performance.

Dx12 is meant to make better use of both CPU and GPU - dunno.
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+1 Same here. Curiously though, I seen an 8FPS increase with DX12 when I had my 390X but when I upgraded to the Fury X the performance is slightly worse with DX12...
 
I tried this in DX12, but for my 2nd playthrough I've gone back to DX11 just so I can use VXAO. I think DX12 in this game was more for the developers' benefit so they can get it out there and test it while they develop their 3rd game. If it works better in DX11 then just use that, it doesn't lose anything and looks better with VXAO.
 
Phil87 said:
I tried this in DX12, but for my 2nd playthrough I've gone back to DX11 just so I can use VXAO. I think DX12 in this game was more for the developers' benefit so they can get it out there and test it while they develop their 3rd game. If it works better in DX11 then just use that, it doesn't lose anything and looks better with VXAO.
Click to expand...

I think there might be a memory leak or something with VRAM as I noticed my VRAM usage in DX12 using very high textures hit around 4GB but then after about 10 - 20 mins of play, the FPS just plummeted and the VRAM usage max'ed out.

DX11 doesn't do this. As you say, it might be just a developer option - it doesn't seem to make the game any better looking, and it also disables the steam overlay in DX12 mode.
 
iv-tecman said:
I think there might be a memory leak or something with VRAM as I noticed my VRAM usage in DX12 using very high textures hit around 4GB but then after about 10 - 20 mins of play, the FPS just plummeted and the VRAM usage max'ed out.

DX11 doesn't do this. As you say, it might be just a developer option - it doesn't seem to make the game any better looking, and it also disables the steam overlay in DX12 mode.
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Interesting,

I will try this myself and see what occurs however I have an 8gb card so will be able to see if it is a progressive leak.
 
^ I have noticed VRAM usage was very high in this game, unsure if this is only in DX12 so I might have to run Afterburner next time and check it in DX11. I've not had any performance issues though, even when playing for over 2 hours. I guess if the memory usage is high it could just be the game engine making the most of available memory so it doesn't have to keep swapping out textures etc, unless of course there is a memory leak (hope not).
 
What are you using to monitor Vram use in DX12 as afterburner does not work with DX12

Doesn't matter have opened the game at my usual settings and noted down what the VRAM use was will leave it as is and check back in 20mins and see if it's grown or dropped though I was instantly up to 7.7gb use.
 
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harry5522 said:
What are you using to monitor Vram use in DX12 as afterburner does not work with DX12

Doesn't matter have opened the game at my usual settings and noted down what the VRAM use was will leave it as is and check back in 20mins and see if it's grown or dropped though I was instantly up to 7.7gb use.
Click to expand...

PrecisionX

It now has DX12 API support.
 
Interestingly having just launched in Dx11 with the exact same settings at the exact same spot ive lost 15fps, if i turn VXAO on then i lose yet another 15 and get knocked down to 30fps where on Dx12 with HBAO+ i was sitting at 60fps.

VRam usage is exactly the same however within a margin of error.
 
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