Server Configuration/WorldObjects.eco
From Eco - English Wiki
This may be connected to when world object check to see if their stats have changed, and thus update their appearance.
For example, as of 0.8, fertilizing crops requires waiting for (or forcing) a tick update for the new soil statistics to show up when using a Soil Sampler.
TargetTickDeltaTimeMS
Time between world object ticks, in milliseconds. Defaults to 0, which makes it variable. Appears to target a 10 minute interval when variable.ParallelWorldObjectTicks
An experimental feature that allows parallel (as opposed to sequential) world object ticks. May increase performance at the cost of stability.