settings.cfg

In the settings.cfg files, which should be located in point_labeler/bin, you can change the followings options:

tile size: 100.0   # size of a tile (the smaller the fewer scans get loaded.)
max scans: 500    # number of scans to load for a tile.
min range: 0.0    # minimum distance of points to consider.
max range: 50.0   # maximum distance of points in the point cloud.
add car points: true # add points at the origin. Default: false.

The tile size influences directly the number of points loaded and therefore sometimes it makes sense to increase this value.