Steve_sr do you have infinite scroll enabled? You can find this setting under 'edit user profile' and then go to edit options and scroll down until you find the thread section. If it is enabled, disable it and see if that still creates an issue. As for what you said about having to navigate through many pages until getting to the end, there is a button at the bottom of the page of any thread that says 'last' this will take you directly to the last reply in the thread. I highly recommend bookmarking the threads you visit the most. Bookmarking threads in your browser will get rid of the need to scroll through threads altogether, and will possibly be the fix of the reload. I have brought this up to tech again to see if they say anything new from the last time I brought it up.

Follow up question, are you leaving tabs open while you are replying to another post? Or are you just leaving the whole thread open. Does this happen in other browsers?