Guild Wars 2

So the last couple of days I’ve been experiencing a quite weird lag/ping issue.
My internet itself seems perfectly fine. When I stand in HOTM or WvW, no matter how much stuff is going on around me my ping stays perfecly fine and stable around 40. Now when I que up for pvp and get into a match, the ping remains around 40, however as soon as the match actually starts (so basically after the brief timer.. 60s or whatever it is) things go insane. The second the spawn gates open my ping jumps to 300-800 which is pretty much unplayable. During that time however my conenction outside guildwars 2 stays perfectly fine.
I’m curious, does anyone else experience that awesome feature as well? :P

uncheck monitor refresh rate or general refresh rate from unlimited to something else in game graphic options

I’m not sure how that would be connected to my monitor though. I’m literally talking about heavy skill delay as soon as a spvp match begins. That skilllag (and therefore the ping issue) is not there when I do anything else. It’s not an fps issue.