Anyone else having large fps drops when in a mystcraft world?
(for some reason there is an enormous amount of chunk updates)
(more specifically: the process: root.gameRenderer.level.updatechunks.rebuild takes up much resources)
How would I go about getting TC4 to work with this pack?
Download thaumcraft 4 from the minecraft forum post and drop it in the mods folder (along with any other extra mods)
You might get an Id conflict when you start your world and the message that a text file stating the conflicts has been written to your minecraft directory.
Open that file, change the Ids of the blocks/items in question to something free, and you should be good to go.
(ps: you can change the TC4 config so that it will regenerate the ores in chunks that have been generated before you added thaumcraft 4, backup first though!)