The description says that the dweller slows as it approaches maximum depth, but actually it slows the greater the maximum depth is. This means that the way to get it to move the fastest is to keep it around the current maximum depth, going deeper only when necessary to let it keep descending.
The description says that the dweller slows as it approaches maximum depth, but actually it slows the greater the maximum depth is. This means that the way to get it to move the fastest is to keep it around the current maximum depth, going deeper only when necessary to let it keep descending.