Tophat Soaring 2.1.6 Beta - Task Target Optimization by speed

Describes how the Safety MacCready setting does not determine how fast you need to fly around the TAT/AAT task to finish in minimum time. Tophat uses the speed that you have actually flown the task so far to estimate how far you should fly into each of the task cylinders to finish on time.
We use the "Task Speed Last Hour" as the predictive speed moving forward.

[@cfoc21]

Hello, I use Top Hat in simulation mode, and I noticed a strange thing. A real glider polar is being used, but when a flight is started in Sim mode, the glider never loses any altitude. The sink rate seems ignored.. Whatever altitude is set at start of Sim, remains that, no matter the airspeed chosen. Is this a bug.?