iPhone App v2.3 Slow Startup

I have a problem with my Lutron Caseta app that seemed to start with the latest update to v3.0, and nothing I've tried is helping.

I have an iPhone 6 Plus running iOS 9.1. In settings, the Lutron App is listed as v2.3. But on November 12th it says it was updated with v3.0 and that is what is reported in the app itself, so I'm not sure if that could be a problem or not. But since the update it takes approximately 60 seconds for the app to start and get to the main screen, whether I'm on my home network or remote on LTE or a public Wi-Fi network. I didn't think much of it at first; assuming that Lutron's servers might be having problems. But it hasn't changed and rebooting the phone, killing all apps and restarting, nothing is working.

I also have an Apple Watch and when it tries to open the app on the iPhone it eventually errors out when it can't connect. Upon a retry after waiting a minute it will connect. And I'm receiving geo-fencing alerts promptly when I leave the house.

Any help would be greatly appreciated.