I've failed twice using Mozilla and windows 10 over WIFI. Now I'm using LAN cable. I'm trying in chrome this time. 100 mb connection in theory.

4 mins on the LAN. The 2nd time it downloaded ok but said it was corrupt.
Edit: 3rd time fine and in 4 mins! Using LAN cable, and Chrome. Maybe it's something to do with me doing it more slowly over WIFI with other stuff going on.