Of course the easiest thing you can try, if you can cope with lower graphics, you can turn your game settings down. And Faction Heir's idea is a very good idea for extra power behind your game. Do note that running anything on "High" will lag any other processes. So if you are running a messenger be sure to close it ( which will save a little more cpu usage ). Because if it is not closed and someone messages you it will likely lag your game for a few minutes due to M2TW being set to "High".

And keeping processes such as firefox or internet explorer open can tie up a lot of cpu usage if you are on a low end system. So keep programs like those closed while playing and you should experience a bit less lag.

Tschüß!
Erich