I really like to hatch eggs, and the 3 uses / incubator per egg give a huge impact for the more or less decent price. So I usually have 6~7 incubator active. First I applied them when ever they were available to what ever egg I just had but it felt kinda inefficient to do so for me.
It started feeling more efficient when I only applied the infinite incubator to the 2.0 KM eggs. But I can't really get why this should matter.
So is there any most efficient way to apply incubators to eggs to get the most use of them before they are expired?
Or doesn't it matter at all?