In TYPO3 CMS, we made the experience that rendering the login status server-side and as a part of the page can make the page significantly slower because not the whole page can be cached. Therefore, in TYPO3 context, using an AJAX call to either render the user name or the login form proved to be the better alternative.
What are your experiences regarding this matter in Neos? Of course it's the same scenario: The block displaying the user name or login form cannot be cached. But is the whole caching mechanism efficient enough to still provide a good performance?
Thanks for sharing your thoughts.