Having the same issue from central Europe to EU and NA servers. Ping normal is about 50 (EU) and 120 (NA) but since this week it spikes to over 300 on both continents.
How can I like it. I have a small guild and we mainly roam in the borderlands. We sometimes stick to commanders gathering pugs and this is how wvw works for us. I don't see a place for roamers or pugs in this system.