I was flying at 160 knots, as TFFR Tower told me to maintain slowest practical speed.
How to reproduce:
1: Open IF
2: Select any 747-400
3: Fly to an altitude of FL200
4: Start to descend to 3,000 at -1,500 to -2,000fpm
5: Slow speed to 160KIAS at 5,000.
I was barely able to. A button to declare an emergency would be really useful. I was stalling until 1,000 feet, and the terrain was a little mountainous in the area.