Basically what is this update called “Heightmaps”?

Update Heightmaps

from GalCiv2 Forums
Basically what is this update called "Heightmaps", which is 250mb and what will it offer and could it slow the game down on some computers?
5,688 views 3 replies
Reply #1 from GalCiv2 Forums Top
The heightmaps are just pregenerated planet terrains, so that the game doesn't have to make new ones each time you play. By using them, especially if you turn down the 'planet surface variety' slider in the game's options, you can save memory and thus have better performance.
Reply #2 from GalCiv2 Forums Top
Anytime you save memory to get better performance is   OK with me.
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Reply #3 from GalCiv2 Forums Top
Glade this Heightmap is optional because my modem with a maximum speed of 115200-57600bps can only download one-third of this 250mb file before an error occurs each time.

Why not try to divide this file into three or four parts to make it easier to download.