Hey,
what is the minimun Internet Speed required?
Depends on whether you are on low or high setting as high setting downloads more high quality imagery and needs more. Going by what Laura said with a 2 hour flight, you really don’t need superfast internet, but I can’t give you an exact number atm.
There is no “minimum” I think. But it is recommended that you have a fast internet connection, preferably WiFi. :)