How big is the latest update?

@impstrump First - the game is not the only program that requires temporary files to run. You have to understand how a download works. When a download begins it creates a temp file until the download is complete. Once the download finalizes the download that file is renamed and copied to the destination location. Therefore to download a file you need at least twice the size of the file. If for any reason the file download gets interrupted that temp file may (probably) stay waiting for the file to complete. The Windows operating system is a resource hog. I compare Windows to an old western gold strike.. Programs estimate how much memory it requires and lays claim to it. The problem comes in when there is no more memory to claim. There is microcode called the memory manager that coordinates all this. When a computer runs out of main memory it pages out chunks of data to the page file which is stage and slower then main memory. If the computer runs out of page file space you may (probably see that not so uncommon blue screen. This could be caused because the page file is flexible and can (and does) give up space if needed. Abain this is a job for the memory manager. There could come a time when there just isn't any more and that's when the computer slows down to wait it's turn. Memory management is very complex and this is a simple over view.   hth