49016e78_rver_Features___Hack_Mine_Wiki__Description
[Property] pctUsageMax [Default Value] .999 [Description] 
Triggers a "grow" when exceeded by "pctUsage." The percentage leftover (1-pctUsageMax) could be thought of as another safety buffer; the larger it is, the less likely you'll have an area unnecessarily reload before the tick is done and the pctUsage can be calculated. pctUsageMax is generally a safety net, and should be set to a very high value you're certain reflects an increased need for areas.
Server Features - Hack/Mine Wiki
Description