sync speed

Hi there, 

Welcome to the Box Community! 

Syncing files usually depends on how big the files you're trying to sync or internet connection. You may try to sync files using different network to check if the issue still persist. You may also try to sync lesser files. You may check this article in testing your network connection: https://support.box.com/hc/en-us/articles/360044195813-Testing-Your-Network-Connection

Thanks!