If it has game-breaking issues, then play another pack. The whole pack is basically based on IguanaTweaks. It's like taking IC2 and Forestry out of basically any other pack.Yes, I turned IguanaTweaks off >.>
After having multiple issues with multiple different mods, I turned it off. I left allof the other mods active, of course, but after several game breaking issues with MF1, I automatically turned it off in MF2
But if you like it without IguanaTweaks, suit yourself. You won't get the whole experience of MF2 without it.