In a VR game experiencing lag but retaining a Forward Rendering Path, which property can help mitigate frame rate drops?

The property that can help mitigate frame rate drops in a VR game with a Forward Rendering Path is renderViewportScale. This property allows developers to adjust the rendering resolution of the game relative to the display resolution. By reducing the render viewport scale, the system can decrease the number of pixels being processed and drawn each frame, which directly impacts the performance and helps improve frame rate.

In VR, maintaining a high and stable frame rate is crucial for providing a comfortable user experience. When the render viewport scale is set lower, it effectively eases the GPU workload, enabling it to render frames faster. This helps to reduce latency and can alleviate some of the lag issues that may be affecting the game's performance in virtual reality scenarios.

The other options, while relevant to various aspects of rendering and performance optimization, do not address the direct reduction of the workload involved in rendering frames. TargetFrameRate is useful for capping frame rates but does not directly reduce the rendering load. CameraDepth is related to the order of rendering but does not impact performance. ShadowDistance affects how far shadows will be rendered, which can impact performance but is less effective in reducing lag compared to adjusting the overall rendering resolution through renderViewportScale.