1) No company is ever going to punish anyone for using a VPN. That said, some countries like the UAE punish/disallow these but that's only if you actually are living/staying in the UAE and even then I do it quite often whenever I am there and have never been hunted down.2) VPNs reducing latency to GW2 is entirely up to the VPN you choose, and possibly the routing you set it (e.g. some VPNs like PIA allow you to select which endpoint your traffic will exit on), so while you may now have better latency to American servers which are AWS instances located in Virginia, you could suffer additional lag elsewhere to more local destinations (e.g. rather than using a google.com that's near NZ, you would be using a google.com that's near the endpoint of your VPN, thus now you not only get the USA version of google but you have additional latency to using google as well).