What's this glitchy, string-like particle effect called?

I recently saw a video with this effect I can't even describe. Otherwise I would've googled it. Can someone here tell me the name of the effect / plugin used to create this? Thanks in advance

- Edit: The clip starts with the room being "normal" and then the "strings" kind of move into 3d space. Sorry for the bad explanation, here's the clip in case you need to see it to understand: Unrequited / Sayaplayer Overwatch Montage / HalfEar - YouTube