Hi everyone, I have recently moved my world onto Feed the Beast Ultimate and nobody has had any problems except me, I have been getting this weird jittery lag type problem, like the frame rate is low, or the video is stopping and starting several times a second. My computer is more than capable of running this mod (I have run complex machinery etc in tekkit, bigdig, voltz etc) and I am registering at 80+ fps yet it looks like I am running much much lower. Is this a common problem? I have tried fiddling with the allocated RAM in the launcher (between 1-7gb) to absolutely no change as well. Any help would be amazing as I have moved this server over and have to keep it running but I can't play it properly myself :/