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Issue Data
Status: New
Issue Type: Bug Report
Project: Unofficial Fallout 4 Patch
Component: Fallout 4: Vanilla
Category: Perks & Stats
Assigned To: Nobody
Platform: All
Severity: High
Votes: 1
Watching: N/A
Opened By VaultDuke on May 14, 2023 10:54 am

Issue #32934: Poison Perception debuff bug

Bloodbug, Stingwing and Radscorpion poison applies a -5 Perception debuff for 4-6s.
There is a well known bug, that when poison resistance changes during these seconds, an incorrect amount of Perception is restored at the end of the poison effect. This is most well known for leaving players with a reduced Perception, after having used Med-X while poisoned, see related issues as well as:

It would appear, that during application and removal of the debuff, the effect strength is calculated with the poison resistance at that time.
Interestingly, the bug is not reported for Bloodbugs.

It turns out, that the MGEF with the Perception Value Modifier for the Stingwing and Radscorpion poison is affected by Poison resistance, while the MGEF for the Bloodbug is not, see Resist Value in:
StingwingPoisonEffectPlayer "Stechflügler-Gift" [MGEF:0006D2E3]
RadscorpionPoisonEffectPlayer "Gift des RAD-Skorpions" [MGEF:00130DBE]
crBloodbugBloodSpitEffect02 "Blutkäfer Blut spucken 2: AV-Effekt" [MGEF:00032569]

Proposed fix: Remove the Resist Value from the Perception Debuff for Stingwing and Radscorpion, to bring it in line with the Bloodbugs poison.

I will implement this in my game and test this fix for a bit.

Further musings: The MGEFs use Value Modifier and not Peak Value Modifier. I don't fully understand the difference between the two, but it might be worth checking out, if the latter is maybe not affected by this engine bug.

Further musings b: There is another similar bug reported for crippled heads and dehydration in Survival mode. Not sure is a similar fix could be found or not, i couldn't locate the MGEF for these Perception debuffs. The Stingwing and Radscorpion Poison are the only two MGEFs with a Resit Value, that reference Perception "Wahrnehmung" [AVIF:000002C3] in FO4Edit

Related Issues: 20767  21216  25532  


5 comment(s)
VaultDuke said:
While we are at it, "StingwingPoisonEffectNPC "Stechflügler-Gift" [MGEF:00090866]" is the only other MGEF that affects a Stat and has a Resist Value, according to XEdit.

VoodooChild said:
Wow, this has been a long time running issue. I hope this works. Nice work.

lexinight said:
While we are waiting for a proper fix, I have a couple points to add.
This effect can be stacked - i.e. you have multiple instances of -5 perception and need to remove them one at a time.
You can remove this by equipping a piece of poisoner's equipment, getting poisoned by a rad scorpion or stingwing, and then removing the piece while the poison is in effect. This can take some trial and error, as it is not always noticeable when you are poisoned.
As far as I have been able to tell, there is no easy way to find out how many stacks of -5 perception are on your character, as your perception cannot be brought below 1. I had to remove possibly 3 stacks the hard way, I only had 6 perception, so I didn't know if the fix was working until the last stack was gone.

VoodooChild said:
That's what I had to do my first playthrough with the piece of poisoner's armor.

Also after re-reading the original post I realized there may be a mistake as far as Bloodbugs. They do not have poison damage. They give radiation and acid damage, which may be why Radscorpions and Stingwings have different values.

VoodooChild said:
Now, after reading some more, some descriptions say Bloodbugs do give poison damage and some say acid and radiation. At this point I'm not so sure about which is which, but it may still explain why they are listed differently than the other two.

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