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DirectX 12 is recommended to be used, Vulkan is problematic
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FSR2 inputs are questionable, Steam version crashes, so disable FSR2 in game settings before adding Optiscaler (or set Fsr2=false
in Optiscaler.ini) - recommended to use DLSS inputs
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Use Optiscaler as winmm.dll
to successfully load, AMD/Intel users also need Fakenvapi
if DLSS isn’t exposed
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Renaming Optiscaler.dll to OptiScaler.asi
and using Ultimate ASI Loader x64 as winmm.dll
/version.dll
also works
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If Optiscaler isn’t working (generally Vulkan), another possible way should be renaming Optiscaler.dll to nvngx.dll
and using RDR2-NVNGX-Loader with Optiscaler (overlay may not work). - FSR4 Upgrade not supported this way
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Compatible with Lenny’s Mod Loader
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Turning on NV Reflex with Fakenvapi can cause stutters.