If those versions are genuine, why should change the HASH? If the HASH is different, it´s not untouched.
Are you using utorrent, look at photo in above post, downloading at between 1.5 and 1.7MBs I'm only downloading 64 bit version... I'm on WiFi
Mega was between 100/kbs to about 250. This is close for me. Do you have your upload speed set for about 60% of capacity? If so, it will increase your download speed.