It would be possible for you upgrade RAM to 8GB?my laptop is very old, have 4gb ram, quadcore i3 2,40ghz, and HD graphics Intel. I can run LOL in very low quality. I know is a toaster
This should speed up everything quite nicely.
Adding SSD would be another good thing, giving old laptop like yours a second life.
Btw, could you give me exact info about CPU and Intel graphics?