TCU TurboLamik

Hi there
I have the problem like with full gas with kickdown from 3 gear to 2 , when already at the 2nd gear and rmp about 3000-3500 but car not go so fast like it shut be, like gearbox is sleeping too much. When upshift to 3rd,everything good. And this problem only from 3 to 2 kickdown, kickdown ...