Engineering consoles don't really have diminishing returns (except at very high, impossible to reach values), it's just that the way they work is a little unintuitive and there's a complicated chain of equations to convert resistances.

Essentially, the resist value is converted from an exponential one into a linear one. When you see "+20" resist (one purple Neutronium Alloy Mk XII), the game takes the percentage resistance (20%) and converts this into your

*effective resistance*: 16.6%.

Now, if you add another of the same Neutronium console, you have 28.3% in total, for a gain of 11.7%; it seems as though your effective resistance (not your tooltip resistance) is gaining less from the second console.

However, the effective resistance is the amount of extra damage it will take for you to be killed in comparison to your pre-resist value. For example, say your hull is at 1,000:

If you have +25/25% percentage resistance, your effective resistance is 20%: I now only deal 800 per shot, so it takes another 25% extra damage (25% of 800 = 200) to kill you

If you have +50/50% percentage resistance, your effective resistance is 33.3%: I now only deal 666 (

) per shot, so it takes another extra 50% damage (50% of 666 = 333) to kill you

And so on. It's easier to think of the resist consoles as effective health, rather than flat resistances (which could theoretically make you invincible).

[9:52] [Zone #11] Neal@trapper1532: im a omega force shadow oprative and a maoc elite camander and here i am taking water samples