Flh Den

Lately I have been having a lot of issues on the forum using Safari on an Imac. Latest version fairly new Imac. Typing text is always a few characters behind, lazy loading is horrible, half way through typing even a short reply the page reloads and I lose everything. It happens constantly. I am currently using Firefox browser and it seems fine. Any ideas what is happening with Safari. This is the only site where it seems to be happening. TY