Planar Fragment Causing Server to Lag Hard

[Drink With Me]

So there's a planar fragment. With like goat men in it. It has an antechamber that has like pink/purple mist in it. With mobs labeled as Goatflesh Fiend Warrioress. A group I was with would transition into it and immediately the server would come to a screeeeching lag. Once we left. The lagg stopped and once someone went back in, the lag picked back up. It's one of the random 'flickering' seams.  One that dis-pates once you've completed it.  It spawned under an Ash Seam, that we easily bested without any issues of lag. So it must be tied to that particular one some how?  Not sure what else info I can give hopefully someone can tack on some more details.

Edit: I should add that it could not be causing the lag issue in question but it correlated with the lag spike on the server. Once we left it stopped and when someone went back in. It started back up. Though other stuff could've been going elsewhere in the module.