I have started setting up the network monitor on my iPhone while I use MSFS 2024. I have a fibre to the router, low latency (10 ms or less), 100 Mbps ethernet connection, a 200 gb cache and unlimited bandwidth settings.
The most I ever saw was a 26 mbps download. When I setup a night arrival to KJFK the sim stuttered and stopped with the landscape below slowly being rendered in chunks. Despite my network the most the servers sent me was 260 kbps.
I think we need to understand their definition of server performance and availability better.