Set the number of swapchain buffers used when rendering with Vulkan.
The swapchain manages the sequence of images that are presented to the display.
Valid range: 2-3 buffers. The default value is 3.
2: Lowers latency but requires precise synchronization between rendering and presentation. Frame stuttering might occur if the renderer can't match the display refresh rate.3: Provides better frame pacing and more consistent performance, at the cost of slightly higher latency.
Note: In the Editor, this value is always locked to 3 during Play mode to ensure stable playback while editing. The setting is applied in builds and when not in Play mode.