TL;DR
I think productivity modules = overpowered and should be rebalanced with a heavier speed penalty.What ?
This is from something Fel said on the Steam forums. We're talking about using 4 Productivity 3 modules in a rocket silo vs. replacing one with a Speed 3.And from my reply:The module effects are additive (together) so the small increase in speed can't cover the big decrease in productivity if you swap like that.
You go from 10.4 speed and 40% productivity to 11.05 speed and 30% productivity.
The amount of cycles required goes from 71.42857.. to 76.92307.. (so you consume a bit over 5 more cycles worth of items) and the time required for that goes from 20.604 to 20.884.
By swapping a productivity 3 fro a speed 3 you slightly increase the time it takes (nearly unnoticeable but still) and you need to spend more items.
The only thing that is winning with that is the power consumption but you wouldn't use that many modules if power was an issue anyway.
What I would like to suggest is that the Productivity Module's speed penalty should be increased. 3 P + 1 S should be significantly faster than 4 P (otherwise why is it even called a "Speed Module" if using it is slower???)That seems like a balancing flaw -- Productivity modules slow you down overall, so just taking one out and not putting anything in its place seems like it *should* increase the output-per-minute by a little (and the input-per-minute by a lot). Then adding the Speed mod should further increase both by the same %.
Since you're using more inputs it would actually increase your overall power consumption by a LOT, so there's really no advantage at all to doing that.The only thing that is winning with that is the power consumption but you wouldn't use that many modules if power was an issue anyway.