ZeroSwordsMaster

Launcher: 293(Up To Date) OS: OSX 10.7.5 Java: 1.7.0_25 Experiencing the same issue. One reason that may cause this is that it's running 1.5 on the newest launcher, which for me in the past has caused a very similar FPS drop. In which case, the best bet is sadly to wait for all the mods to update to 1.6.x or newer if 1.7 comes out by then. However, playing on in-game fullscreen did return the game to a playable, normal framerate, although having it on fullscreen is very inconvenient, so I hope this issue is fixed soon

I'm also having a very similar issue with the lag and password resetting; I believe the lag may relate to running 1.5.x on the 1.6.x launcher, as something similar happened when I did so in the past when I did so. One fix that might work is going fullscreen, as for whatever reason that ceased any lag on my machine, although we could be lagging for another reason. Our best bet, sadly, would be waiting for all of the mod packs to update to 1.6.x properly. If it still lags, I have no idea what could possibly be going on. :| (I'm using the newest launcher also, with Mac OSX Lion and the most recent 1.6 and 1.7 versions of Java, as I had to use 1.6 to run any technic mod packs for whatever reason. >_>)