Hello Rico,
I have the same issue on ETL2 server, some days ping is around 180-200 whereas it is usually 48.
After looking around and dicussing with other frenchies on the server, it looks like to affect only Orange France subscribers. The other frenchs using other ISP such as SFR or Bouygues do not have such issue. So basically there's nothing wrong with the server but more on Orange France ISP's routing at the moment. Hope they will fix it soon!