Severe stutter and broken RTX rendering in Minecraft for Windows when NVIDIA App “Smooth Motion” is enabled

Minecraft for Windows (Bedrock Edition) becomes unstable when a supported DirectX 12 driver feature is enabled (NVIDIA App “Smooth Motion”).
Although the feature is driver-level, the application itself should remain stable and must not break rendering, frame pacing, or RTX behavior.

With this feature enabled, Minecraft may initially run correctly, but after time has passed and/or after relaunching the game, the application shows severe stutter and broken RTX rendering (DXR).
When the same environment is used with the feature disabled, Minecraft remains stable.

This indicates a compatibility or stability issue within Minecraft’s DX12/DXR rendering pipeline, rather than a simple driver malfunction.

Environment

• GPU: GeForce RTX 5060 Laptop

• Rendering API: DirectX 12 / DXR

Steps to Reproduce

1. Enable Smooth Motion (a supported DX11/DX12 driver feature) for Minecraft for Windows

2. Launch Minecraft and enter a world (RTX on/off tested)

3. Play normally

4. Exit the game and relaunch later, or continue playing for an extended time

5. Observe that Minecraft becomes unstable:

   • severe frame pacing issues / stutter

   • RTX rendering becomes incorrect or partially broken

6. Disable Smooth Motion and repeat the same steps

7. Observe that Minecraft remains stable under identical conditions

Expected Result

Minecraft for Windows should:

• remain stable over time and across relaunches

• maintain correct RTX/DXR rendering

• not become unstable when supported DX12 driver features are enabled

Even if a driver feature interacts poorly, the application should fail gracefully or ignore it, rather than entering a broken rendering state.

Actual Result

Minecraft becomes unstable after time/relaunch when the driver feature is enabled.
Disabling the feature restores stability.

Important Notes (Why this is not “just a driver issue”)

• Minecraft for Windows is a DX12 application, and Smooth Motion is documented as supported for DX11/DX12.

• The issue appears after time has passed or after relaunching, suggesting problems in state re-initialization, cache handling, or pipeline management inside the application.

• The same driver and system remain stable in other DX12 titles.

• Therefore, this should be tracked as a Minecraft Bedrock compatibility/stability issue, even if coordination with the GPU vendor is required.