Im having constant 5 fps, even when I'mputting all settings to absolute minimum. Strange thing is that I'm having 5 when everything is fancy, maximum lighting etc.
When I pull up the "Lagometer" (the alt+f3 menu) the red lines go off my screen, they are so high.
I have 16GB ram, 10 allocated for minecraft. I also tried it with allocating 8, 10, 12.