I really have minimal issues with the meter, not sure how good your computer is but here is what I do.
Use Google Chrome.
Close the browser after each round. (Wgt memory leaks lol)
Download CCleaner and use it regularly.
Try opening a game client and turning the "Flash quality" down to medium or low in the game settings.(I use medium)
If your computer is somewhat old/slow you can download Gamebooster.
If your computer is loaded with lots of files/programs try deleting some you don't need/use.
Also I have an average computer, 8GB RAM/1TB HDD/i3-4130/Windows 8.