Zombie farm is broken

[Shestick]

I don't know why but my zombie farm with best fertilizer and 20% efficiency zombie just consumes seeds. Is this some kinda joke? Do i need 40% for it to be fully autonomous or what? And what exactly this "efficiency" affect? A clear answer is nowhere to be found, but for deliverers it seems that they are faster, so it would be logically if farmer just speeded up the process while fertilizer gives you more profit. However it is as i said: my pumpkin farm loses about 2-3 seeds per harvest.
And what is more strange, vineyards are just fine and give profit. WTF

[Fargel_Linellar]

Efficiency on zombie only affect the speed at which they perform action. At 50% efficiency, they will take half the time you take to perform the same action (potentially at 100% efficiency, they would work as fast as the player, but 100% efficiency is not reacheable).

So in a farm, a higher efficiency zombie will take less time per harvest.
The only exception are move speed of transporter zombie, no matter the efficiency, they perform their travel at exactly the same speed.

Seeds return on zombie farm are random, they can oscillate between a -4 deficit or a +4 surplus (with every number in between).

If you have a big enough seeds reserve, this should be ok, as the chance of having positive and negative seeds are the same, it just avoid the farm stopping when 2-3 harvest in a row have a deficit.

[Shestick]

THANKS! Dunno how you got it but i really appreciate this.

[alation13]

I wouldn't be too fussed with the efficiency bonuses you can get from the zombies. As pointed out above it is more important to have a surplus of seeds so that they don't just stop working. All that said, by the time you automate much of your workload, the greatest inefficiency you will find is manually clearing the stockpiles every few days as you get so many resources coming in.