What percentage of free space do you have on your system partition? I like to run as close to 70% free space(free, not used) as I can. Defrags are fast so I can do them a few times a week(Puran does a good job without going too spastic.)
Also another trick, if Windows is managing the swap file, you can often leave it on the system partition but defrag it by making the initial size and max size the same. How big depends on usage. (I believe in trial and error, not some theoretical arugment.)
If you have enough ram to boot with no swap you can turn off swap. Delete the swap file, Defrag the system partition. Then turn swap on with manual management. Set the initial and max the same size. The page file will be created at the size you set. It should all be in one piece since you defragged the drive beffore creating it. After that, unless you change the page file size, you should never have to defrag it.
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