I got this idea after I noticed I’m struggling to get forbidden exosuit module with good set of buffs and high rolls.

https://preview.redd.it/icox1pf5g5mc1.png?width=725&format=png&auto=webp&s=f847830fe9da29195cfacaea1dcdc8e388bd2b33

Here you can see table with possible buffs and min/max range. For me most important buff is fuel efficiency, then shield strength and on 3rd place are both life support tank and core health.
After popping ~300 sentinel exosuit fragments I didn’t get single module with those 4 specific buffs and high fuel efficiency (up to that point max I could get was 9% fuel efficiency + 3 other buffs with pretty high rolls).
At that moment I decided to use NomNom mod, to test drop rates and see how easy or hard it is to
get 30% fuel efficiency + core health (always 33%) + 2 other buffs with high rolls.
I started yesterday, started with 1000 sentinel exosuit fragments, after this I was thinking I was being unlucky so I popped 200 more, took break and popped 1000 more (2200 total).
I also popped 1000 rebuilt exosuit modules which I believe are exact same thing with different name. Why do I think they are the same?
Look at wiki pages :

1)https://nomanssky.fandom.com/wiki/Forbidden_Exosuit_Module

2)https://nomanssky.fandom.com/wiki/Salvaged_Upgrade_Components

They both have same set of buffs and min/max range, and when dismantled they both drop same components. This makes me think coding behind both of them is the same (this doesn’t mean I am right, I just think I am).
After popping 3200 exosuit modules I had no energy left to post all this info on reddit, so I decided to leave it for tomorrow… Today when I decided to post results I was shocked because all of the stored modules from my inventory disappeared including personal refiner and neural stimulator. Both autosave and restore point were corrupted somehow… And I have no idea how to show you … this is best I could think of.

https://preview.redd.it/bwwttfl6k5mc1.png?width=1919&format=png&auto=webp&s=dce3b859caa6e1f15f0b3b791da6236bcbcffc47

Now its up to you to decide whether you believe me or not. But to have any kind of results I decided to pop today 2000 more rebuilt exosuit modules.
So here are results of my experiment (keep in mind almost all modules from yesterday are lost):
First 1000 sentinel exosuit fragments – best drop was module with all 4 buffs (fuel efficiency 12%, core health, shield strength 33% and life support tank ~104)
200 more sentinel exosuit fragments – best was fuel efficiency 9% with 3 other buffs with good rolls.
Last 1000 sentinel exosuit fragments – at around ~800 (of 1000) I got first 20%+ fuel efficiency

I added numbers manually for easier understanding

https://preview.redd.it/usq3smkwm5mc1.png?width=650&format=png&auto=webp&s=3d63f968cc1c0cff90b8ca4bc0234bcf35eea099

And here are other 2 modules which I think are the best:

https://preview.redd.it/jq8ovp9yn5mc1.png?width=1300&format=png&auto=webp&s=e6a1863e8edf94caf3a923ad8d85cd28d8bee9c1

It was relatively easy (~1:40-50) to get 4 other buffs (other than fuel efficiency) with high rolls, but up till that moment it was impossible to get 30% fuel efficiency + ANY 3 other buffs, best I got was 30% fuel efficiency + 2 other buffs.
First 1000 rebuilt exosuit modules – I finally got 30% fuel efficiency + 3 other buffs, but instead of life support tank I got sprint distance, and roll was low. Roll for shield strength was mid (around 25).

Now results from today’s 2000 rebuilt exosuit modules:
It was kinda easy (~1:70) to get module with 4 buffs (other than fuel efficiency) with high rolls, I got plenty. Examples:

https://preview.redd.it/nq665ijmq5mc1.png?width=1300&format=png&auto=webp&s=25ed867e728ae6aa01f82bea9653dea620b320f5

It was also easy (~1:40) to get 20+ fuel efficiency and 2 other buffs. Examples (ignore warning):

https://preview.redd.it/qrls32ycv5mc1.png?width=1940&format=png&auto=webp&s=0ab0cf0dcf7c213abd70a37d757e176cb3626540

While popping modules I noticed there is some kind of “rubber band effect”, where when you got 4 desired buffs, fuel efficiency will be very low + 3 high roll buffs. Or fuel efficiency low, life support tank low, other 2 high rolls. It feels like you can never get all 4 high rolls.

Most of modules with 4 desired buffs looked like this:

https://preview.redd.it/b9rd59z6w5mc1.png?width=640&format=png&auto=webp&s=4307e02f84f5000498b40a1ec184399cb57718f2

Sometimes (~1:800) modules with 4 desired buffs look like this:

https://preview.redd.it/jmnjqpj4x5mc1.png?width=640&format=png&auto=webp&s=d25e884d800d16967e4a92932d91d0b2ac5007ef

It was VERY HARD (~1:105) to find 20+% fuel efficiency with 3 other buffs.

All 19 examples (ignore warning):

https://preview.redd.it/y9st898s46mc1.png?width=2590&format=png&auto=webp&s=f1513712daf83d2ae6a7cfc8d5ef05c66b0058f8

It was EXTREMELY HARD (1:1000) to find 30% fuel efficiency with 3 other buffs. I found only 2 from today’s 2000 modules.

https://preview.redd.it/r4aftpki66mc1.png?width=1300&format=png&auto=webp&s=03b73acd93ca64aa8396d148ecde29f685b9c2c5

Conclusion

After popping 2200 sentinel exosuit fragments I didn’t get SINGLE module with 30% fuel efficiency, and any 3 other buffs. Got only one half decent module with 20+% fuel efficiency.

After popping 3000 rebuilt exosuit modules I got 3 modules with 30% fuel efficiency, and any 3 other buffs.

If you don’t care about fuel efficiency then you should definitely grind for module with 4 buffs with high rolls. But if you are like me – no, I think it’s not worth. Even when you get 20+% fuel efficiency at least one of other 3 buffs is ass.

Possible solutions?
Raising min values would definitely help, which imho will never happen…

Giving players ability to copy 1 of modules with “blank module” which could maybe be obtainable from weekly nexus mission.

New game mechanic – “karma” which you can build up by helping NPCs on planets and in space. The more you help, the more luck you will have, and both amount of buffs, and rolls will be higher.

Depending on how interesting this topic is, I may do something similar with suspicious modules for mining laser and movement.

If you hate yourself, or don’t care about your sanity you can try this yourself. Tell me later what results you got.