My website Missionfamily.org is very fast due to Nitropack extension which provides various caching, compressing, minyfying and cdn options. But this is only for unlogged users. Unfortunately the same plugin does not do anything for logged in users when there are items in the cart, on the cart page etc. On those pages the html code is unminified, the js and CSS files are not unified or served compressed... Basically the site is very slow for logged users. Now the problem is this: due to cookie related conflicts no extension for opencart handles pages for logged users. W3tc for Wordpress works even in such scenarios so I do I don't know why there is nothing available for opencart that does anything like that.
Could anyone help suggest ways in which I can achieve the same speed improvements without running into any operational problems with the site's core exommerce functionality?
I am really desperate so any help would be highly appreciated