GW2 keeps downloading data during startup
Make sure the Gw2.dat file is writable on the new system. The launcher displays the number of files it will download not the amount.
Found that the files were read only when I copied them. Removed read-only but I still experience the problem.
I’ll rename the DAT file and try re-installing, then copy the DAT file again.
Looks like re-installing then replacing the DAT file fixed the issue.