Crash on launch RDR2_b1491.exe+2C8363F (three-sixteen-fanta) - AMD integrated GPU

What is the issue you’re having?

This is my first time ever launching RedM. RDR2 was purchased on Epic Games. RedM crashes consistently with the exact same crash signature (RDR2_b1491.exe+2C8363F, legacy hash three-sixteen-fanta) either right on launch or shortly after, before ever connecting to a server.

Stack trace:
RDR2_b1491.exe+2C8363F
RDR2_b1491.exe+2C8C225
RDR2_b1491.exe+2C7E6B2
RDR2_b1491.exe+2C81B9F
RDR2_b1491.exe+2C62573
RDR2_b1491.exe+22ACA3
RDR2_b1491.exe+2C78235

Red Dead Online and RDR2 story mode both work completely fine when launched directly through the Epic Games Launcher / Rockstar Games Launcher - this issue only happens through RedM.

What have you tried already to fix the issue?

  • Deleted RedM cache (content_index.xml, game-storage folder)
  • Reinstalled RedM and RDR2 completely
  • Verified RDR2 game files through Epic Games Launcher
  • Closed all overlays (Discord, Blitz, OBS Studio) before launching
  • Switched Graphics API between DX12 and Vulkan in RDR2 settings (both eventually crash - DX12 gives this exact crash, Vulkan gave a different one-time crash: RDR2_b1491.exe+C7DA9, hash stairway-north-social)
  • Checked Windows Defender exclusions for RedM and RDR2 folders

What server did you get this issue on?

None - happens before connecting to any server, or very shortly after joining one.

Windows version

Windows 11 (25H2)

System specifications

Acer Nitro 5, AMD Ryzen 5 5600H, NVIDIA GTX 1650 (dedicated), 16GB RAM, SSD 512GB

Antivirus software

Microsoft Defender

Additional comments

RDR2 is running on an integrated AMD GPU laptop (no dedicated card). RDO/story mode work fine outside RedM, so game files and hardware don’t seem to be the issue - this seems isolated to RedM’s own rendering/init process.

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