Define point cloud settings - Intergraph Smart Isometrics - Help - Hexagon

If you specify a value for Load limit that is below the number of points in a point cloud data set, the overall density of the data or the density of portions of the data is reduced to best match the defined limit. The recommendation is to set this value above the size of the point clouds to be used but below the amount of memory the computer has available. For example, loading a dataset of 250 million points requires approximately 2GB of main memory. If your computer does not meet this requirement, set the Load limit value accordingly.

If you specify a value for Display limit that is below the number of points in a point cloud data set, the overall density of the data or the density of portions of the data is reduced to best match the defined limit. For example, if your graphics hardware comprises twin 8GB graphics card or a single 16 GB graphics card, you set the maximum value of 640. For a 256MB graphics card, 10 is a good setting for fast, interactive display.