I've mostly been a .world user, but have this alt account on .ca as a backup. I logged into it to make sure I didn't have anything in my inbox, and noticed that everything loads so much faster. In both cases I'm using the browser interface from my tablet, sorting by all. On .world, there's a pause before the text comes up, then the thumbnails and graphics slowly populate. On .ca, it all pretty much loads instantly.

Is it just the number of users being a lot bigger? More community activity? Hardware differences? Running different software versions? A combination of these? I'm curious.