Player,
I just registered to say thanks so much for this mod. I'm running the DW20 1.0.3 mod pack with FTB launcher on my Hackintosh in single player mode. With an I7-3770k,16GB of ram and 650Ti graphics the machine should easily run everything. Before installing your mod I was hovering around 30 FPS and getting lag spikes where the game would randomly freeze for 2-15 seconds. Now it's super smooth with no lag spikes and FPS rarely dips below 50 FPS.
I'm a noob when it comes to this stuff so I have no clue what fast craft does under the hood, but it made a huge difference in my situation.
Keep up the good work!