Photoshop and lightroom re-install

I have Photoshop and lightroom installed but I need to re-install Windows on my pc because of problems I'm having. I have an extremely slow internet connection. Are there certain files I can backup that will reduce the re-install time of PS and lightroom? Otherwise I am looking at a couple of days to download.

rick5733, 
Products from the Creative Cloud subscription needs to be downloaded from the Creative Cloud desktop app only. We cannot back up the files. 
Once you have re-installed your Windows you can download the Creative cloud desktop app by login in to the below link:
https://creative.adobe.com/products/creative-cloud
Once you have signed in click on Apps tab and try downloading the Photoshop and Lightroom.
You can refer to the below document too:
Creative Cloud Help | Install, update, or uninstall apps
Thank you.

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