N1C2010

Just recently I downloaded the latest version of the Technic Launcher and have been experiencing extremely low fps. On the older version of the launcher I would get a little over 60 fps with Tekkit Classic running on moderately high settings with the Sphax Pure BD Craft texture pack installed and 8gb of ram allocated. Now with the exact same settings (except only 7gb of ram) on the newest launcher build I am getting 1-5 fps. Does anyone now why this is?