Flight Simulator 2020 is a very resource intensive program especially during the initial loading of your flight. When starting a flight in a dense area with a lot of detail often Flight Simulator will crash just when it gets to the flight. The problem seems to be memory related so the more memory you have, the better. But if you don't have enough there are a couple of ways to configure Flight Simulator and your system to allow you to fly even in the densest areas on the planet.

For complete instructions and a walkthrough
watch the video below