Thanks Todd,
We are currently working an issue on email loading and should have an update rolled out over the next day or two.
This update should significantly improve email loading performance and consistency.
Regarding the long load time on the Chromebook we have a few items that we are working on that will likely improve the Chromebook performance. These changes are specifically related to optimizing the delivery of the application resources using a few number of combined and compressed files, caching, etc.
I was curious whether the load time you mentioned was on wifi or 3g?
Thanks,
Jack