Just ran a test at 99% SoC, max battery ready. Maximum power was 415kW on the nose...
Wow, looks like you had a cutback on a car that should not be tripping based on the little information available from Tesla. I recommend two things:
1) To keep the many expected comments out of my data collection thread, repost your info here: Pack Performance and Launch Mode Limits
2) Make an appointment with your service rep complaining that the Ludicrous mode is no longer working. I would not talk about any counters, etc. Just an expectation that this "failure" is covered under warranty. Everyone will be VERY interested in Tesla's response.