For Microsoft Flight Simulator you will not only need an high-end PC, you will also need high-speed Internet
Microsoft Flight Simulator have released three different categories of hardware specifications and the requirements are not useless.

Microsoft Flight Simulator looks nice, that's obvious. But, the big question is what kind of hardware we'll need for that flying beauty come true on PC. This question has now received its official answer and it should be admitted that it is very interesting.
Specifically, as was to be expected from a game that will stream its map over the internet, the raw power of the hardware won't mean much without a fast internet connection. There are large gaps between the minimum and the ideal, let's just say that MFS is as demanding as Google Stadia's streaming service. In addition, this is one of the first games for which stands how that classic HDD will not be enough to play comfortably, so having an SSD is recommended.
Here's how will look a boarding pass for the new Microsoft Flight Simulator:
Minimum requirements for take-off:
CPU: Ryzen 3 1200 / Intel i5-4460
GPU: Radeon RX 570 / NVIDIA GTX 770
RAM: 8GB
HDD: 150GB
Internet Speed: 5 Mbps
Recommended requirements for sky high:
CPU: Ryzen 5 1500X / Intel i5-8400
GPU: Radeon RX 590 / Nvidia GTX 970
RAM: 16GB
HDD: 150GB
Internet Speed: 20 Mbps
Ideal requirements for real pilots:
CPU: Ryzen 7 Pro 2700X / Intel i7-9800X
GPU: Radeon VII / Nvidia RTX 2080
RAM: 32GB
SSD: 150GB
Internet Speed: 50 Mbps