I've hunted down the source of the issue here. It seemed to be a drastic overuse of Reflection calls to obtain the RealChute assembly, calling it quite literally every time any singular chute part was iterated over!
I've opened a pull request that solves this issue by caching the obtained Reflection info. With an i7-13700K I've gone from horribly stuttering for a good 1.5-3.0s every time I pick up/place down a part on large crafts to being buttery smooth.