The user reports that Heidi has become noticeably slower since the recent web interface changes approximately one month ago. They are using Safari on a MacBook and experience delays when: Opening existing sessions Creating new sessions Loading templates There are no error messages, but the overall web experience is significantly slower than before. The user also specifically mentioned that they preferred the previous Heidi layout/format and felt it performed better for their workflow. The user requested to improve the loading speed and responsiveness of the current Heidi web experience, particularly on Safari/Mac, and consider their feedback that the previous interface felt faster and easier to use.