Skip it, your ethernet driver probably missing.
Press Shift + F10, that will open Command Prompt. Then type this
oobe\bypassnro
press Enter and it will reboot.
It won't ask you to sign in anymore.
Is it possible to change server location like in Steam?
Maybe you should try flushing your DNS cache or reboot your modem. Sometime it just poor routing to GOG server.
Finally able to play this game again after recent Proton Experimental fixed the performance issue.
Created this typical arpg spin2win boi and enjoying it so far.
As usual, GW2 tax
Try MorePowerTool or MoreClockTool
https://www.igorslab.de/neue-version-des-morepowertools-mpt-und-finale-des-redbioseditors-rbe-zum-download/
IIRC, the power is limited to 160w in BIOS. You can increase it with MPT.