Runes of Magic US / AU

Have you tried changing your in-game video settings to compensate? I recommend unchecking all of the Special Effects boxes, with the exception of "Hide effects of other players".

Let us know if this helps or makes a difference.

Which zone is this image from? It appears to me to be Silverspring/Varanas, but it's difficult to determine due to the angle the shot was taken from.

If it is from the Silverspring/Varanas area, I've personally never seen that particular effect.

Oh, its that festival thing... but your video settings.... ouch...

Quoted from "Murkalael;588820"

Yes, it's near snoop on Varanas

I thought it looked familiar, but seen from an angle lower to the ground.

What I've seen is a swirl of what appear to be musical notes when the event is active, but I usually view from a somewhat higher angle than your image shows. It looks nothing at all to me like the plethora of ever-increasing cows that were closer to the Varanas rez shrine. I don't think that the issue is specific to any particular server, but I haven't checked servers other than the one I normally play on.

I have to stand by my suggestion regarding disabling most of the special effects--especially Bloom and Distort FX. Disabling those two settings may make a difference and should improve your overall framerates.