I am aware of an UI bug that causes it to cache external IP and try to connect through your external IP. As a result, solenoid actions are being significantly delayed. Samer can probably explain the details, but here are my observations:
1) this bug seems to only trigger when I am using Chrome browser, and when I am using Safari or Firefox it seems fine.
2) Clearing Chrome browser cache/history seems to solve the issue at least temporarily (but it may start caching the external IP again).
Let me know either of the above makes any difference. This bug has been fixed and will be released in the next UI update.