Agree with those here who've made suggestions of upgrading RAM and changing to SSD.
Upgrading RAM never did anyone any harm, and RAM is cheap, so always try to get as close to the system maximum as you can afford.
Changing to SSD is a good way to coax a little bit of extra performance out of a system. It won't suddenly turn your machine into some sort of supercomputer, but you should find various things to be snappier.