please comment on this article if there is something that could be better explained or you have questions.

The first thing you need to do is ofc download 
Synthesis ps: ignore the orange color. its just flux making the screen more yellow/orange



click on the link in the first picture, then click on Synthesis.zip on the new page. it should get downloaded automatically. the version shouldnt matter, just download the newest version with 'latest' behind it.


create a new folder and unzip the files into it so it looks something like this. i have already used the tool so ignore the data and logs folders







if you use mod organizer 2, click on the box next to the run button, then ONLY locate the synthesis.exe in Binary. same thing in vortex probably, just different ui. Alternativily you can tick the box where you send the synthesis patch to a mod folder if you dont want it in the overwrite folder.




after that, choose synthesis and click on run. When you have opened synthesis, it should look something like this.
click on the highlighted symbol to add a group.



After you have added a group click on the highlighted add patcher symbol 



Synthesis should look something like this. 



click on the AIOverhaulPatcher



then click on the plus symbol that show up when you hower your mouse over the patcher. click on it to add the patcher to your group. 



click on the highlighted circles to enable the group and patcher if they look like this. then click on settings.




dont change the default settings



click on the highlighted arrow when the patcher is ready to patch. then wait until it says writing output at the bottom of the page and completed where ready is written.



you can find the plugin at the bottom of your loadorder and in the overwrite folder. if nothing shows up then click on the f5 key to refresh mo2.


More info: 

-affect children too, you dont need ai overhaul patches for children overhauls 

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oyvveg

51 comments

  1. CooperPF
    CooperPF
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    Does the order of patches in Synthesis matter? Should I put AiOverhaulPatcher at the top or at the bottom?

    https://imgur.com/a/FwntZtR
    1. oyvveg
      oyvveg
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      it shouldnt matter
  2. Dovah164
    Dovah164
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    Does this patcher only forward ai overhaul edits for NPC replacer mods, or does it do it for anything like jk Skyrim? Also if some mods already have ai overhaul patches, would it still be fine to run this patcher for other mods that don't have an up to date ai overhaul patch? 
  3. thienthu
    thienthu
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    • 4 kudos
    For some reason using the patch makes the Bannered Mare door locked at around 1 AM. It looks like an NPC leaving the inn lock the door behind
  4. AtsushiATS
    AtsushiATS
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    Do I still need this if I'm using the Wrye Bashed patch?
  5. DeFiNiTy8
    DeFiNiTy8
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    Why am I getting 0/0 npc's in the patch log?
  6. kosmoskatten
    kosmoskatten
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    I had a blocking error at first, but clicking the "match" option worked.
  7. puffballsunited49
    puffballsunited49
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    Having an issue using this with Nortbourne NPCs, the majority of them are having the dark face bug, checking in SSEDIT, Synthesis seems to be trying to use the vanilla forms for the NPCs appearance and its clashing with Northbourne.

    EDIT: Fixed my issue, ignore.
    1. PahnDuh
      PahnDuh
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      • 6 kudos
      I'm having a similar issue. How did you fix it?
    2. oyvveg
      oyvveg
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      Can you say how you fixed it so that other people can see, if they have the same problem.
    3. galaxy94
      galaxy94
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      • 8 kudos
      as someone who uses northbourne, you basically have to load them after every single other npc mod and npc resource pack if you want them to appear properly.  The author has stated this is because the entire face is one facegen, including the hair, so discoloration fix won't work, but it will still work for all the other npcs mods below northbourne.  Also make sure you don't have any patches for clothing/armor mods like ACE, WACCF, Dawnguard arsenal etc overwriting northbourne.  
  8. FrogFallout
    FrogFallout
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    Do I still need to download other patches or I  can just use this?
  9. Fluxator
    Fluxator
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    Do I still need AI Overhaul enabled in my load order, or is it included in the Synthesis Patch?
    1. oyvveg
      oyvveg
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      You need it enabled. The patch have it as a master and your game will ctd without it
  10. hoangdai94
    hoangdai94
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    • 179 kudos
    @oyvveg Tanks for this, but do you know how I could add this musictype patcher https://github.com/OddDrifter/musictype-patcher
    to Synthesis ?
    1. oyvveg
      oyvveg
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      no sry