Eh no worries :P There are still some ways to improve your performance on your cellphone.
Basically try these tips:
1.drop the resolution
2.go offline
3.use anti lag app
4.use task killer app
5.turn off power saving mode
6.upgrade hardware(if you can)
7.delete unnecessary apps
This will probably turn your steamy potato,into a less steamy potato:P
(it will basically help with the performance(probably).