This modpack is still in development, even thought it's already in a really good state.
The main purpose behind the development of this pack is to try to give the same gameplay that you would have in ATM, with insane Tech and Magic mods, but with less mods and with more FPS.
There's a lot of otimization Mods, such as Sodium for Forge (Also know as "Magnesium") and a lot of others.
I recommend reserving at least 6GB of your memory to play it properly, even thought 8GB would give a much better result (Don't try this option if you don't have more than 8GB of RAM).
Updates comming soon, have fun. :^ )

