Constant DEFAULT_GPU_MIN_POINTS_PLANE 

pub const DEFAULT_GPU_MIN_POINTS_PLANE: usize = 2_000; // 2_000usize

Minimum point count before GPU RANSAC plane scoring is selected under Auto.

Full-cloud bench on the public PCL table_scene_lms400 sample (460k points, 1000 iterations) showed ~11× GPU speedup. After MVP-style voxel downsampling (leaf=0.05) + normals the same scene is ~2k points and GPU remains ~2.7× faster in local release measurements.