The mod is beautiful and I have it in my 1.4.2 install. It is a must have. I have something like 62 mods loaded in that 1.4.2 version and everything is smooth as silk frame rate wise. In 1.4.3 however, parts packs have cut the frame rate in half or more from 1.4.2 to 1.4.3. I did troubleshooting and it is parts packs, including this one ) that have made the drop from smooth 60 (capped) to 25 or lower, but I have the same setup (mods wise) and have even removed some mods for troubleshooting as well as lowering my options for the same purpose. This is not a bug report or a gripe, but is more of a question to people in the know and to an evidently highly skilled modder. The question is, what would make the parts packs effect the frame rate to such an extent from 1.4.2 to 1.4.3?