Question [q] ram expender

Hello,
Can anyone tell me is RAM EXPENDER is useful software for my xperia ion coz i just install it and it doesn't help me as i increase my ram to 2gb but still my phone hangs and it do not run games like "real Steel" properly(still hangs somewhere). or can anyone give me any solution to play full hd games without any problem.....
Please help

Xperia Ion
PureION | Kitkat Feeling
Rooted
TWRP/CMW
Bootloader UN-locked