Q:
Should I upgrade to Windows 8.1?
A:
Why would you not update is the question?
This. Unless you have a known reason as to why you shouldn’t update (rare driver or program incompatibility), you should update to 8.1 as soon as possible.
With that in mind, GW2 works fine on 8.1 with no regressions.
Guild Wars 2 on GNU/Linux Notes: https://wiki.realmofespionage.xyz/games:wine:guild_wars_2
Why would you not update is the question? Updating to 8.1 can be done at any time, however, after the deadline you will no longer receive security updates on 8, which means 8 is EOL (end of life) and they will only be supporting 8.1 with security updates.
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