The consumption of the agricultural science pack is very fast compared to other packs in Biolab. I didn't test it in a regular lab.

ayo wut, that can't be right. Imma test that rq.

Have you considered the freshness of the science pack?
From my test, it has the same consumption if the agri packs have 100% freshness..

With this mod the lab used up 200 packs in a couple of seconds, I specifically flew on the platform to pick up new packs. I took both the old packs and the new and consumed in the laboratory they are equally fast. Now I turned off the mod and the consumption goes at a normal rate. Both old and new packs. I think freshness does not affect their rate of consumption in the lab.

The science packs have their own capacity, separate from freshness, which is consumed in the laboratory. The value of which also depends on their quality. White quality packs (normal packs) have a 100% freshness capacity.

I have the fridge mod enabled, which slows down the spoilage of all resources from planet Gleba if stored in a special container from the mod, maybe it had some effect on this. I haven't checked.

yeah this isnt working right, my first agriculture science packs ever made have lost ~600 hours worth of life span in minutes haha

has to be some kind of optimization and saving UPS to simulate how much % went down instead of the actual seconds or something

So does this issue arise only with the fridge mod installed, or does this happen either way?

I didn't check it out. Right now I'm using another mod for now that completely disables resource spoiling. I still have the fridge mod installed. On all items disappeared spoil status, but not on the science pack, I will check whether it will spoil, but will have to wait 6 real hours.