When I browse my wordpress site “wp-admin/upload.php” (media library) page, it takes more than 70 seconds to load first page. Also it takes around 461.06MB memory to load the first page, I found this by enabling ‘query monitor’ plugin. I have investigated a little about this issue, but didn’t get any clue. The site has around 80,000 number of photos include various sized thumbnail in current “uploads/2017/07” uploads directory. Is that could be a cause of this slowness? How can I improve speed up the loading time of media library page?