Problems with simulation cloth

Hi, everybody. Please help me with my task. I’m trying to make fabric simulations in an unreal engine. But all my attempts end in failure - the flag does not move. But on another computer, the simulation works fine. On my wife’s computer, the simulation also doesn’t work(. I will be very grateful for your help!
My computer settings:
nVideo - 1070
intel - 5960X
RAM - 32 GB