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This could improve speed many-folds as PHPSESSID and database slows down server time considerably.
Our website, we were able to notice a speed increase with full page caching solution that ignored PHPSESSID from 4-5 seconds load time down to < 1.5 seconds.
Not sire if its related but this plugin wont work with caching because if you set the currency in one country its remembered for a user in another country, even with the auto select country on.
So not sure its related to this but I would like a Javascript solution that fetches the users geolocation and sets in the cookie so it will bypass cache and solve the issue.
It works if you excluded PHPSESSID cookie from caching.