NHTSA Complaint #11419324 — 2015 TESLA MODEL S

In May 2019 Tesla pushed an OTA update on the car (including mine) with caused the car to reduce charging speed a lot. I normally go at the Green Acres Mall supercharger, in Queens NY near JFK airport and my car used to charge at 74kW (about 40 min of time from 50 miles range to 200 miles range). After the update the time more than doubled (about 1 hour and 30 min of time to add the same miles range). The update was in response to a Model S bursting into flames in Hong Kong, although there have been multiple seemingly spontaneous fires over the past several years. Tesla allegedly knew the cars' batteries were defective and decided that it would rather push an update that reduced range, performance and charging speed than replace batteries under warranty. My problem with this is that I need to know if my car is safe to operate. If there were a battery chemistry which was not safe and Tesla rather than change it decided to reduce the charge rate, is this solution acceptable for NHTSA? Also this solution is impacting significantly my schedule. When I bought the car, I considered using it for certain road trips assuming the downtime was reasonable, but after this update it basically made my car usable only for local trips. If you have to charge the car a couple of times over a 500 miles trip, one thing is to add a couple of 30 mins pit stops which is fine considering that most people need to use the restrooms, get something to eat or drink, but another thing is now having to wait a total of 3 hours.