Libraries and Windows HELP

I have a few Spitfire purchases that appear to be 'duplicated' on my hard drive. They are instruments that have the same folders and appear in:

C://users/me/spitfire/

and also

C://users/public/public documents

Do they need to be duplicated like this? Notably not all of the ones that appear in the first location appear in the second. My Spitfire installer says that the download location is the first location above - so why are the huge amounts of GB and sample libraries also in the second location?

Thanks

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