Clean Ur RAM
U may recognize that ur system gets slower and slower when playing and working a lot with ur pc. That's cause ur RAM is full of remaining progress pieces u do not need any more.

So create a new text file on ur desktop and call it ..
uhm.. "RAMcleaner" or something...

Type

FreeMem=Space(64000000)
in this file and save it as RAMcleaner.vbs [ You may choose the "All Files" option when u save it ]

Run the file and ur RAM may be cleaned :)

Of course u can edit the code in the file for a greater "cleaning-progress".

FreeMem=Space(128000000)

just try it out.. it worked for me