Minecraft Realms upload

I am asking that the process for uploading a world to a paid Realm no longer requires a constant handshake. WiFi users cannot operate and maintain a Realm because it is common for WiFi to periodically lose packets over the course of 1 second. The constant handshake causes a timeout despite that I maintain a solid Internet connection all throughout. When the world is over a certain size the process cannot complete and floods the Temp folder with endless copies of failed attempts. This further requires Minecraft to be closed to clear the failed uploads of the drive in order to continue, but this issue would be negated entirely by no longer requiring a constant handshake for a simple upload. No other service I have ever used required a constant handshake for uploads.