Is Plunderstorm lagging the servers?

Just been noticing for past two days now, (being in a low pop server myself) that since Plunderstorm came out, I been noticing series of lag issues, from audio to the map loading, and even textures.

Prior to Plunderstorm, never had such an issue. Dear Blizzard, cant you make Plunderstorm separate from Retail/classic servers? I don't want to deal with another x amount of weeks til S4 comes out of this.