

While this simulates realism, it isn’t realism. If you wanted a cape that flowed when you ran, it would have been an animation that detailed the movement. When Skyrim was originally released, the extent of the use of the Havok physics engine was restricted to things bouncing around whether dead bodies, the odd skull, or a room full of weapons. Swishing hair, flowing skirts, or the ever popular bouncing boobs. It is an SKSE plugin that applies the existing Havok physics engine to other uses in skyrim. What is the HDT Physics Extension for Skyrim? YMMV.Is an SKSE plugin that applies the existing Havok physics engine (not generic animations) to other uses in Skyrim. Personally I’ve disabled the thigh, vagina, and belly physics (just commented them out in cbbe-hdt-vag.xml) for simplicity’s sake, and because I think they’re useless. (this is the default body control XML file in the all-in-one version of SMP that I link to). (very important - tells what objects are controlled by what XML files) and (allows you to choose GPU or CPU processing and tweak the solver settings defaults are probably OK unless you’re having performance issues) \skse\plugins\hdtSkinnedMeshConfigs has all of the control files for SMP. I used Notepad++ to batch change it in all files, which took seconds. The HDT-SMP file that I link to uses commas to delineate floats in all of it’s config files if you live in the US or another country that uses periods as decimal designators you’ll need to change all of those commas to periods or nothing will work. The modder who compiled the all-in-one FOMOD that I link to above has a few pretty useful tutorials that will at least get you started. I find that the XML schema for HDT-SMP physics is simultaneously more granular in its control and easier to understand than regular HDT-PE settings, so it’s relatively easy to tweak the settings to your preferences. Since HDT hairs and outfits all come with their own XML control files that are linked to their meshes, they continue to work as normal. Deleting the hdtPhysicsExtensionsDefaultBBP file prevents HDT-PE from controlling body physics, leaving it to SMP. SMP and standard HDT-PE work fine together, as long as they’re not fighting for control of character physics.

Check through your install order for any instances of that file added by, e.g., Bodyslide, other HDT bodies, etc.

Then browse to data/SKSE/plugins and delete or rename the file called “hdtPhysicsExtensionsDefaultBBP.xml”.First, install both HDT Physics Extensions and HDT SMP (the second link goes to Loverslab, an all-in-one installler that also adds a lot of other SMP-related stuff like UUNP/CBBE Bodyslide settings etc.).Brief tutorial - getting HDT-PE and HDT-SMP working together.
