@OwenBrooks
I've been having the same issues with updates downloading again since 7.2.1, but not consistently, been a week since it last happened then today it's downloading 13gb of "update".
I'm in the UK on BT, just windows defender, no other AV/firewalls, firewall exceptions exist for swtor.exe and launcher.exe
Edit: oh and now version mismatch for the first time. Although if i ignore the popup on the character screen, and just click play, the game seems to work fine.