Pimax Crystal Light & Shimmer/Ghosting

[dwaldrop]

I have had an issue with DCS VR for a while now and have finally gotten tired enough of it to try and figure it out.  I am running a Pimax Crystal Light with an NVIDIA 4090RTX on an Intel 149000kf.  Almost everything is DCS VR looks awesome:  cockpit is crystal clear, terrain and clouds look almost real life, other aircraft (when I hit F2 to look at them) are amazingly sharp, ground vehicles and ships are perfect, smoke, rain, waves, etc are almost real life.  The problem is when I am fighting another aircraft, whether it is AI or another player, the aircraft looks shimmery.  Sometimes streaks come off of the trailing edges and looks like the plane is melting or in warp drive.  Other times I see what I figure is called ghosting, like I see a ghost image of the entire wing as the plane maneuvers.  When I click to the F2 vies of the same plane, it looks prefect.  I have spent a lot of time fiddling with all of the settings and have just about gotten the shimmering and ghosting removed but it is still noticeable.  Sometimes it is worse than other times but there seems to be no pattern as to why it gets worse and then gets better, never going away completely.  I understand that DCS VR is very resource intensive even for a 4090 but one would think that it could do better, especially given that all of the other visuals look so good.  Any help or ideas would be appreciated greatly.  My specs are listed below.  Thanks!

 

PC Specs:

Windows 11 Pro

Intel i9-149000kf 3200MHz   24 core 32 logical processors

64GB RAM

NVIDIA 4090 RTX

Pimax Crystal Light

DCS Settings:

Upscaling: DLSS

DLSS Pref/Quality: Quality

Sharpening:  0.75

Textures: High

Terrain Textures: High

Shadows: High

Flat Shadows Blur: On

Secondary Shadows: On

SSS: Off

Visib Range: Extreme

Clouds: Ultra

Water: High

SSAO: Off

SSLR: Off

Preload Radius: 150000

MAX FPS: 120

Anisotropic Filtering: 16x

Scale GUI: 1

Rain Droplets: High

Enable VR Headset

Pixel Density: 1

MSAA Mask Size: 0.52

Enable HMD Mask: Checked

Pimax Device Settings

Refresh Rate: 90Hz Upscale (Lab)

Render Quality: 0.90

Running Pimax Runtime and QuadViews Companion

NVIDIA Settings

Image Sharpening: Off

Ambient Occlusion: Off

Anisotropic Filtering: 16x

Antialiasing - FXAA: On

Antialiasing - Gamma Correction: On

Antialiasing - Mode: Application Controlled

Antialiasing - Setting" Application Controlled

Antialiasing - Transparency: Off

Background Application MAX Frame Rate:  Off

CUDA - GPUs: All

CUDA - Sysmen Fallback Policy: Driver Default

DSR - Factors: Off

DSR - Smoothness: Off

Low Latency Mode: Ultra

Max Frame Rate: 90FPS

MFAA: Off

OpenGL GDI Compatibility: Auto

OpenGL rendering GPU: Auto-Select

Power Management Mode: Prefer maximum performance

Shader Cache Size:  Driver default

Texture Filtering - Anisotropic sample opti...: Off

Texture Filtering - Negative LOD bias: Clamp

Texture Filtering - Quality: Quality

Texture Filtering - Trilinear optimization: On

Threaded Optimization: Auto

Triple Buffering: Off

Vertical Sync: Use the 3D application settings

Virtual Reality pre rendered frames: 3

Virtual Reality - Variable Rate Super Sampling: Off

Vulkan/OpenGL present method: Auto

 

 

 

[sleighzy]

If you haven’t already then add the below lines to your C:\Users\username\Saved Games\DCS\Config\autoexec.cfg file, create it if it doesn’t exist.

DLSS_Preset = 'K'
HUD_MFD_after_DLSS = true

This will use the latest DLSS preset, which will reduce some of the ghosting. DCS currently uses C by default even though it’s on one of the latest DLSS versions. The second line will mean that DLSS is not applied to the MFDs / HUD so you don’t get the ghosting there that DLSS can introduce.

Try with DLAA as well. 

[dwaldrop]

sleighzy,  

 

I'll give that a go when I get back home this evening.  Thanks for the input!

[dwaldrop]

That helped!  There is a noticeable improvement.  Thanks!