FSMP is short for Faster HDT - Skinned Mesh Physics.

What does FSMP do?

FSMP allows to apply advanced physics on actors via xml settings files. In computer terms, it is a dll using a physics library, Bullet, to calculate moves to apply on Skyrim meshes belonging to actors, depending on xml settings files. FSMP is highly configurable, especially concerning its performance.

What it doesn’t do

It doesn’t provide any xml physics configuration file. It doesn’t know the difference between a cape and a breast. It’s only an engine, the specific physics settings are set in each mod, depending on the provided meshes, and provided in xml files. Basically, if you have a problem that happens only on one armor, or one hair, etc, it’s very probably related to that mod and not to FSMP.

Be confident

You can install, reinstall, uninstall FSMP whenever you wish, however you wish, there is no risk for your save file or your load order. The worse that can happen is your (N)PC have grotesque deformations until you install the correct version. Exception: never ever install the 1.37 version, it’s cursed and will destroy your save. I have hidden it and we are currently at the 2.+ version, so you shouldn’t even have the opportunity to do so.

Interacting with the FSMP community

“hi i have new issue with FSMP - Faster HDT-SMP with capes and cloaks duzint work at all and they and other HTP-SMP can u fix that probelm it not wind issue and capes stay like this [redacted] and shud work like this [redacted] and any ideas how FSMP - Faster HDT-SMP”

-- A real user this week requesting help by nexus private message –-

At the time I update these lines, FSMP has 2,066,051 unique downloads since the 21st October 2021, which should mean as many unique users in 4 years. Thank you 😊 ! However, this has brought some very specific challenges, for example how to maintain a useful and up-to-date knowledge base in a thriving and diverse community. This wiki aims to try and solve some of these challenges. I hope to update it each time I see a way to save my time and your time.