How often do you do it? (FTP Detection)

[ArHu74]

To illustratrate your point, today I accepted a change from 246->254W 2 weeks after and this is what happened (tldr my planned threshold workout changed from 3x15 min @246W 75 mins to 3x12 @ 241W for 60 min with my new FTP) , so increasing my FTP by 3.3% actually made my threshold workout easier:

Do Progress Levels drop too much after an FTP update?

Easy way to find out. Just do Starr King and report back. On a more serious note. AT seems to be a bit conservative when it comes to PL reduction. The best thing to do is report this to support so they can evaluate if this is unintended behavior or give you a reasoning for such a big drop.