I have a 4090 and an LG 42" OLED and wondered what the best settings are to get the most out of it.
With an OLED you'll probably want to adjust the HUD coloration to be less harsh on the panel. Someone had a thread for this, but the specifics escape me at the moment.
Make sure the display is set to full range RGB and maximum refresh rate. Make sure G-Sync is enabled. Enable the DLDSR resolutions (the default 33% smoothing should be a good balance, but if jaggies still bother you when all is said and done, you can try increasing this). Use high quality textures and forced 16x AF in the NV control panel (the in-game terrain blending maxes out at 8x). Optionally, enable low latency mode (slightly worse performance consistency, but meaningfully lower input latency). I'd also personally recommend using NVIDIA Profile Inspector to force ReBAR.
Beyond that, max out the in-game details and terrain work slider. Set FoV to taste. Use the in game SMAA and 'normal' super sampling. Set the game's resolution to 5760*3240 (which corresponds to 2.25x DLDSR), then adjust the in game super sampling multiplier down to reach whatever frame rate you find acceptable (0.85x should work well).
You can also improve the game's
shadow quality and increase a variety of other settings well past what the in-game options allow.
Personally, this is what's in my current GraphicsConfigurationOverride.xml:
XML:
<GraphicsConfig>
<HDRNode_Reference>
<GlareCompensation>1.25</GlareCompensation>
</HDRNode_Reference>
<HBAO>
<High>
<HBAO_RadiusInMeters>8.4</HBAO_RadiusInMeters>
<HBAO_NearRadiusInMeters>2.1</HBAO_NearRadiusInMeters>
<HBAO_NearDistance>200.0</HBAO_NearDistance>
<HBAO_PowExponent>2.0</HBAO_PowExponent>
<HBAO_Bias>0.3</HBAO_Bias>
<HBAO_BlurSharpness>1.0</HBAO_BlurSharpness>
<HBAO2_PowExponent>3.0</HBAO2_PowExponent>
<HBAO2_Bias>0.1</HBAO2_Bias>
<HBAO2_BlurSharpness>16.0</HBAO2_BlurSharpness>
</High>
</HBAO>
<SpotShadows_Ultra>
<CacheShadowAtlasSize>16384</CacheShadowAtlasSize>
<CacheShadowSize>1024</CacheShadowSize>
</SpotShadows_Ultra>
<Planets>
<Ultra>
<TextureSize>8192</TextureSize>
<AtmosphereSteps>8</AtmosphereSteps>
<WorkPerFrame>512</WorkPerFrame>
</Ultra>
</Planets>
<GalaxyBackground>
<High>
<TextureSize>8192</TextureSize>
</High>
</GalaxyBackground>
<Bloom>
<Ultra>
<GlareScale>0.025</GlareScale>
<FilterRadius>0.8</FilterRadius>
<FilterRadiusWide>3.5</FilterRadiusWide>
</Ultra>
</Bloom>
<Envmap>
<High>
<TextureSize>2048</TextureSize>
<NumMips>8</NumMips>
</High>
</Envmap>
<GalaxyMap>
<High>
<HighResNebulasCount>4</HighResNebulasCount>
<LowResNebulaDimensions>256</LowResNebulaDimensions>
<HighResNebulaDimensions>1024</HighResNebulaDimensions>
<LowResSamplesCount>64</LowResSamplesCount>
<HighResSamplesCount>112</HighResSamplesCount>
<MilkyWayInstancesCount>64000</MilkyWayInstancesCount>
<MilkywayInstancesBrightness>1.0</MilkywayInstancesBrightness>
<MilkywayInstancesSize>0.25</MilkywayInstancesSize>
<StarInstanceCount>16000</StarInstanceCount>
</High>
</GalaxyMap>
<Debris>
<High>
<DebrisLimit>2000</DebrisLimit>
</High>
</Debris>
<Terrain>
<UltraPlus>
<BlendTargetsResolution>2048</BlendTargetsResolution>
<WindVectorFieldResolution>2048</WindVectorFieldResolution>
</UltraPlus>
</Terrain>
<Volumetrics>
<Ultra>
<StepsPerPixel>16</StepsPerPixel>
<DownscalingFactor>2</DownscalingFactor>
<BlurSamples>3</BlurSamples>
<StepMultiplier>4.0</StepMultiplier>
</Ultra>
</Volumetrics>
</GraphicsConfig>
An RTX 4090 would probably not even get warm.
GPU limited on my 3.03GHz core, 24.3Gbps GDDR6X, RTX 4090 with the card itself using over 600w:
My usual settings are a bit more conservative as this is at the limit of the stock cooler and getting borderline on power delivery on my budget model 4090, but outside of on foot conflict zones, or open space away from planets/stations, I'm always GPU limited.
