cannot start??? ERR_GFX_STATE when i try

[seacow]

ok i??? have literally tried everything. every time i go to open the game, it opens to a black screen and then theres a pop up that says ERR GFX STATE, reboot and restart game. so i do that and it does nothing. ive tried opening from both steam and rockstar. sometimes it'll say theres already a game open when there definitely isnt. so i've done a clean reset of rockstar, i've restarted my computer, updated my driver, updated my computer, verified file integrity, uninstalled and reinstalled the whole game, deleted sga files, deleted the entire settings folder and deleted system. xml files. rockstar support has been of no help and literally could not give me anything else to try. please help i just want to be a silly cowboy :,)

[seacow]

figured it out! had to disable vulkan.
go to Documents\Rockstar Games\Read Dead Redemption 2\Settings\system.xml .

<API>kSettingAPI_Vulkan</API>
<locked value="true" />
needs to be changed to
<API>kSettingAPI_DX12</API>
<locked value="false" />

if the file doesn't exist, here's the coding. save it as a text file and add it into the settings folder (or a new settings folder) under documents\rockstar games\red dead redemption 2. the coding pasted here already has the fix added.

<?xml version="1.0" encoding="UTF-8"?>

<rage__fwuiSystemSettingsCollection>
<version value="37" />
<configSource>kSettingsConfig_Auto</configSource>
<graphics>
<tessellation>kSettingLevel_Ultra</tessellation>
<shadowQuality>kSettingLevel_Ultra</shadowQuality>
<farShadowQuality>kSettingLevel_Ultra</farShadowQuality>
<reflectionQuality>kSettingLevel_Ultra</reflectionQuality>
<mirrorQuality>kSettingLevel_Ultra</mirrorQuality>
<ssao>kSettingLevel_Ultra</ssao>
<textureQuality>kSettingLevel_Ultra</textureQuality>
<particleQuality>kSettingLevel_Ultra</particleQuality>
<waterQuality>kSettingLevel_Custom</waterQuality>
<volumetricsQuality>kSettingLevel_Custom</volumetricsQuality>
<lightingQuality>kSettingLevel_Ultra</lightingQuality>
<ambientLightingQuality>kSettingLevel_Ultra</ambientLightingQuality>
<anisotropicFiltering value="4" />
<dlssIndex value="2" />
<dlssQuality value="2" />
<dlssSharpen value="0.350000" />
<fsr2Index value="0" />
<fsr2Sharpen value="0.350000" />
<taa>kSettingLevel_High</taa>
<fxaaEnabled value="false" />
<msaa value="0" />
<graphicsQualityPreset value="0.500000" />
<hdr value="true" />
<hdrIntensity value="100" />
<hdrPeakBrightness value="1000" />
<hdrFilmicMode value="true" />
<gamma value="26" />
<hdrSettingsMigrated value="true" />
</graphics>
<advancedGraphics>
<API>kSettingAPI_DX12</API>
<locked value="false" />
<asyncComputeEnabled value="false" />
<transferQueuesEnabled value="true" />
<shadowSoftShadows>kSettingLevel_Ultra</shadowSoftShadows>
<motionBlur value="true" />
<motionBlurLimit value="16.000000" />
<particleLightingQuality>kSettingLevel_Medium</particleLightingQuality>
<waterReflectionSSR value="true" />
<waterRefractionQuality>kSettingLevel_High</waterRefractionQuality>
<waterReflectionQuality>kSettingLevel_High</waterReflectionQuality>
<waterSimulationQuality value="4" />
<waterLightingQuality>kSettingLevel_Ultra</waterLightingQuality>
<furDisplayQuality>kSettingLevel_High</furDisplayQuality>
<maxTexUpgradesPerFrame value="5" />
<shadowGrassShadows>kSettingLevel_High</shadowGrassShadows>
<shadowParticleShadows value="true" />
<shadowLongShadows value="true" />
<directionalShadowsAlpha value="false" />
<worldHeightShadowQuality value="1.000000" />
<directionalScreenSpaceShadowQuality value="1.000000" />
<ambientMaskVolumesHighPrecision value="true" />
<scatteringVolumeQuality>kSettingLevel_Ultra</scatteringVolumeQuality>
<volumetricsRaymarchQuality>kSettingLevel_Ultra</volumetricsRaymarchQuality>
<volumetricsLightingQuality>kSettingLevel_Ultra</volumetricsLightingQuality>
<volumetricsRaymarchResolutionUnclamped value="true" />
<terrainShadowQuality>kSettingLevel_Ultra</terrainShadowQuality>
<damageModelsDisabled value="false" />
<decalQuality>kSettingLevel_High</decalQuality>
<ssaoFullScreenEnabled value="true" />
<ssaoType value="0" />
<ssdoSampleCount value="4" />
<ssdoUseDualRadii value="false" />
<ssdoResolution>kSettingLevel_Low</ssdoResolution>
<ssdoTAABlendEnabled value="true" />
<ssroSampleCount value="2" />
<snowGlints value="true" />
<POMQuality>kSettingLevel_Ultra</POMQuality>
<probeRelightEveryFrame value="false" />
<scalingMode>kSettingScale_Mode1o1</scalingMode>
<reflectionMSAA value="3" />
<lodScale value="1.000000" />
<grassLod value="3.000000" />
<pedLodBias value="0.000000" />
<vehicleLodBias value="0.000000" />
<sharpenIntensity value="1.000000" />
<treeQuality>kSettingLevel_Ultra</treeQuality>
<deepsurfaceQuality>kSettingLevel_High</deepsurfaceQuality>
<treeTessellationEnabled value="true" />
</advancedGraphics>
<video>
<adapterIndex value="0" />
<outputIndex value="0" />
<resolutionIndex value="17" />
<screenWidth value="2560" />
<screenHeight value="1440" />
<resolutionIndexWindowed value="17" />
<screenWidthWindowed value="2560" />
<screenHeightWindowed value="1440" />
<refreshRateIndex value="3" />
<refreshRateNumerator value="144006" />
<refreshRateDenominator value="1000" />
<windowed value="2" />
<vSync value="1" />
<tripleBuffered value="true" />
<ReflexSettings>kSettingReflex_Off</ReflexSettings>
<pauseOnFocusLoss value="false" />
<constrainMousePointer value="false" />
</video>
<videoCardDescription>NVIDIA GeForce RTX 3090</videoCardDescription>
</rage__fwuiSystemSettingsCollection>