Small (<50 mb) worlds, world editing menu and the game itself may take up to 5 minutes to load. Editing worlds becomes impossible due to load times. Same applies to marketplace.
Comments 2
Cleaning up old tickets: This ticket has not been updated recently (~1 year+) so is being closed as Cannot Reproduce. If you feel this is still a valid issue then please comment, or create a new ticket following the Issue Guidelines.
Quick Links:
📓 Issue Guidelines – 💬 Mojang Support – 📧 Suggestions – 📖 Minecraft Wiki
In my experience, it's because the xbox account login is embarrassingly slow on any platform besides the xbox. Microsoft should feel shame. If you log out of your account, the lag should stop (but you won't get achievements.).