VT was running constantly. Since TeslaFi isn't causing any problems I am going to think my issue was coincidental. I will keep VT offline for a few more days, then bring it back up and see if the problem returns.Did you have VT running polling constantly or did you have it go to sleep on a regular basis (e.g. at night)?
I used to have VT run all the time for my Model S, but I setup a sleep schedule at night, so it would only poll every half hour or so. That would minimize the constant API queries (during the day it was every 4 min).
Now I have TeslaFi polling every minute for my Model 3, even at night (though it doesn’t wake the car up if it’s asleep, it just polls vehicle status), but I haven’t had any connectivity issues.