Cloud performance

[Charly314159]

Hello,

 

When flying through clouds in VR, I see FPS drop from 45 (asw on) to low 30. This is really difficult to understand since there is basically nothing to render outside of the cockpit.

 

No setting other than PD seem to have effect. This issue occurs regardless of the plane. Mig-21 PRGM Approach is a good example.

 

I am using a HP reverb with a 1080ti, an i7 6700k @ 4.7GHz, 32go of RAM and DCS running from a nvme SSD. I can't see any component causing a bottleneck.

The issue occurs on 2.5.5 and 2.6.6

 

Thanks for your help.

Edited March 13, 2020 by Charly314159

[BMGZ06]

I could be wrong but clouds are not nothing in the game. They do it via volumetric rendering since they are 3D and dynamic. I am sure this requires a lot of resources. So they are likely more difficult then say ground textures. That said you may want to look at lowering some settings since you CPU is pretty old now and turning down shadows and turning off SSAA and MSAA may help a lot to see if the FPS gets better.

 

with my system you can see in my signature I can fly through clouds without much issue but I also have SSAA, MSAA off and shadows set to low.

Edited March 14, 2020 by BMGZ06

[razo+r]

I could be wrong but clouds are not nothing in the game. They do it via volumetric rendering since they are 3D and dynamic. I am sure this requires a lot of resources. So they are likely more difficult then say ground textures. That said you may want to look at lowering some settings since you CPU is pretty old now and turning down shadows and turning off SSAA and MSAA may help a lot to see if the FPS gets better.

 

with my system you can see in my signature I can fly through clouds without much issue but I also have SSAA, MSAA off and shadows set to low.

 

The clouds you mention will most likely be like this when they update them. But right now, they're only a bunch of clustered 2D textures.

[Charly314159]

I could be wrong but clouds are not nothing in the game. They do it via volumetric rendering since they are 3D and dynamic. I am sure this requires a lot of resources. So they are likely more difficult then say ground textures. That said you may want to look at lowering some settings since you CPU is pretty old now and turning down shadows and turning off SSAA and MSAA may help a lot to see if the FPS gets better.

 

with my system you can see in my signature I can fly through clouds without much issue but I also have SSAA, MSAA off and shadows set to low.

 

Thanks for your answer, off course I have all AA settings off (which looks pretty bad...) and even if my system is old it is not exactly low end. Especially because the CPU is overclocked at 4.7ghz and that Intel IPC and single core perf has not dramatically increased since it was released. Furthermore I set up DCS to run on dedicated physical cores.

 

The really boring thing with this is that when drops happen I don't see the GPU nor any of my CPU threads bottleneck.

 

I don't think " go buy a 3000$ PC" is an appropriate response for a Sim that runs poorly even when it doesn't looks great and keep getting worse despite promises of optimization. I hope for ED than Microsoft doesn't decide to revive combat flight simulator as well.

Edited March 14, 2020 by Charly314159