Ever since 1.12.0 update, chunk rendering and loading has gotten a lot worse. As you can see in the attached images, there are lots of random chunks not loading completely. You can even see this happening on the map as black areas. Seems to happen a lot in water areas.
Related issues
Attachments
Comments


i see you are flying with elytra if you go too fast the game cant load fast enough also in 1.12.0 the chuck rendering system was changed which may not help. until the issue is fixed avoid from flying too fast to which chunks will not render

James, the problem is that I’m not really flying that fast. Maybe it has to do with how high I am traveling, I don’t know. I have tried hovering over it slowly and it still happens. Regardless, this wasn’t an issue before the 1.12.0 update. And there are still issues with the map pixels not updating or uncovering correctly when exploring a new map.

the 1.12 update changed a lot of ho the game renders chunks hoping to make it faster multiple people have reported this and will hopefully be fixed soon

Thank you for your report!
We're tracking this issue under MCPE-63268 so I've requested this report be resolved and linked as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
Quick Links:
📓 Issue Guidelines – 💬 Community Support – 📧 Customer Support – 📖 Game Wiki