We are currently in the process of refactoring the architecture of Community to speed up the site, which is a large task. Please note comparisons to Stack Exchange are as good as to any other forum or website, because the Community software is different from the Stack Exchange's one. We just implemented a small speed up update, - perhaps you will notice. One thing to be aware is that single post pages are loading quite fast:

while dashboard is slower and has delays of post-appearance. I hope members will bear with us, because we are developing many custom features for this forum specifically, and hope to have a great place for all of you in the future.