I downloaded Marvelous Designer today after not having it for several months. It kept crashing. So I contacted my son. He said that a recent Windows update is making a lot of programs use the default video card rather than the better NVIDIA card. So here's how to fix it: Type "open graphics" in the lower left corner box. Click on "Graphics Settings" Bring that up. Stay in Classic interface then go to MD, add it, then change it to high performance. That fixed my problem.