That's defnitely odd.Hello everyone!
I've got a problem with this pack.
Performance is very bad, and by very I mean insanely. For example, it takes at least 15 seconds to search through nei for an item, and almost a minute to open Steve's workshop with four crafting tables.
But my PC (laptop actually) is not a tin can: i7, 16gb ram and raid0 with fast HDDs. Is this some error on my side? Or is this something I should expect? If this matters, I run Linux.
Is it a new world or have you been playing for a while?
When you hit F3, what's your RAM usage look like?
Definitely look into Opis as MadTinkerer suggests.