Ever since my ISP had an outage a few days ago, Pandora has been much slower to load the app and switch between songs. All other apps work fine on the TV. I have tried a re-install of Pandora and rebooting the router. Any help is appreciated.
Looks like you've tried some troubleshooting already. I do see a new device association on 8/28 and wondered if that had helped at all.
I've gone ahead and enabled a trace on your account. If you're still having trouble, then I recommend running through the troubleshooting once more while the trace is enabled. I can take a look at see if anything stands out.
To start, please try a few standard network troubleshooting steps:
Rebooting your modem and router, then restarting the Roku player. I would disconnect both for at least a minute.
Try connecting directly with an Ethernet cable rather than using Wi-Fi, if the option is available for your model. This will help determine if it's a connection issue.
Finally, try deleting the Pandora channel from My Channels, and try re-adding it from the Channel Store. (You can find the Remove channel option by pressing the * key on your remote while the Pandora channel is highlighted on the home screen.)