what i found helpful was:
go to the technic launcher,
then go to the cog in the top right corner.
turn the gb down, i have a desktop so i had mine down to 1 gb but if u have a small laptop u may need 1.5 - 2 gb of storage.
before this change i was getting 7 - 15 fps on tiny but now i can go onto normal and get 15-40 fps.
hope this helped cos it really helped me!
also get 64 bit java and dedicate more ram to java (my java has 2gb)