Lag caused by shoe mesh - how to fix it?

[KinkieGurl]

I'm using the [ANK] UNPB Really High-Heel Collection mod, but some of the meshes, specifically those in the /18 and /19 subfolders in the /meshes directory make Skyrim extremely laggy.

 

I'm sure it's not related to the polygon count as Elewin's pumps (those in the /elewin/ subdirectory) that are also included in the mod have a much higher number of polygons and still they do not cause any noticeable lag.

 

I also noticed something strange: I ran SSE NIF Optimizer (just as an experiment) on the nif files in the /18/ folder and the produced optimized _0 and _1 nif files are the same size while the original meshes are 1 240 906 bytes and 1 339 416 bytes respectively. I suspect that NIFs might be corrupted.

 

Is it possible to fix those meshes? I know that it is not possible to convert SSE meshes back to Oldrim so I'm hoping that a Nifskope guru might have a few pointers.

 

(By the way, I've removed the HighHeel system from the mod and converted it to NiOverRide so, in all likelihood, it is not a HH related issue.)

 

 

 

 

 

 

 

[KinkieGurl]

Okay, Fall Creators Update removed the lag.

 

Still, I'd like to know if there is a way to optimize/debug .NIF files. I found an article on Construction Set Wiki (https://cs.elderscrolls.com/index.php?title=Nif_Optimization), but it does not work for Skyrim meshes.