Loading time

Hello, we have noticed over the last few months that it takes a long time to reload the pages. Sometimes we open a page (any page, for example MY TASKS, or a project in particular), and it literally gives a preview of tasks completed days ago, and after 5 seconds it refreshes and load the actual updated tasks. My team is asking to change project management tool, saying they waste time waiting for the page to reload every time they move from project to project, but we just upgraded to a year subscription because we like the way quire works... except for the speed. What can we do to solve this?