Static files generated

Hi

Ran some tests and GTMetrix reports that my site sends a lot of static files to the browser
https://gtmetrix.com/reports/qq.groddfron.se/34KDsMf3/

For Autoptimize, I enabled optimization but not aggregation

Then I looked at the server and saw these in Autoptimize’s cache CSS folder:
https://www.reddit.com/user/fitnesspage/comments/ofvckc/autoptimize_static_files/?utm_source=share&utm_medium=web2x&context=3

I’m just wondering are these different versions of the same file or unique files?

Are old files stored? I worry that old versions are being sent to users, delaying load times

Anyway, love this plugin!

Thank you