About This File
So first let me clarify that is file won't do anything if you don't have an SMP body installed. SMP bodies like BHUNP and the All-In-One-HDT SMP By DKnight13 (which I personally use and highly recommend if you like extra jiggles) have thigh physics. But the problem is, if you convert several NPC outfits in Bodyslide to any of these SMP bodies directly then you're gonna have major lag because these bodies contain finger physics, forearms and all kinds of shit. So I have not tested this with other SMP bodies but I think in theory they should work as long as the bone names are identical.
So me personally I never cared about them finger and forearm physics, instead I just wanted thigh physics. So what I did was I modified the UUNPHDT file that comes with Bodyslide and added and weight painted the bones responsible for the thigh physics. So in a nutshell if I installed a new armor or outfit and wanted to add thigh physics to it without fucking up my framerate, then I would just convert it in Outfit Studio and use the Load Reference option and then load the built-in but now modified UUNP HDT preset. That way the outfit would now have the thigh bones enabled and because I already have SMP body installed, the bones basically use the values from that and voila. I have literally converted most outfits in the game to this modified uunp and I'm seeing 0 impact on the performance. Unlike when I had just 3 followers and all of them wearing outfits converted to use the full on SMP body. You probably should keep the naked bodies full SMP though.
So here's how you make it work:
1) Get yourself an SMP body, set it up etc
2) Download the file and place it in this directory: BodySlide and Outfit Studio\CalienteTools\BodySlide\ShapeData\Unified UNP
3) Load up whatever outfit in Outfit Studio.
4) Delete the body that comes with it, then select all the meshes (Ctrl + Left Mouse to highlight them all )
5) Navigate to the Bones tab and highlight all the bones and delete them all from Project.
6) Next up, Select File, Load Reference, From Template: Unified UNP HDT (which is this file), select zaps and sliders and OK
7) Highlight all the meshes, Select Shape, Copy Bone Weights, Ok
8 ) Slider, Conform All.
9) Save the project. And now it is done. To make sure that it worked, select the body pieces from the meshes and you should see the NPC L FrontThigh NPC L RearThigh and their R counterparts in green.
10) Profit.
The end result is in the video. As you can see, the breasts and the butts use the old fashioned hdt pe physics that come with the uunp preset, but now we've added thigh physics to the mix without fucking up the framerate.
