Generally, when we see issues with the Chromecast from any location, these issues arise due to TCP not being supported within your router. This can be fixed by Port Forwarding your home router, using the steps within this article:
There is a link within that article that will take you to an area to pick your router make and model; once you've chosen this, follow the provided steps and this should resolve your issue.
I hope this helps!
Sling Media Technical Support