You seriously have to fix this problem, especially in Stonefield. It is nearly impossible to get the rares because as soon as they spawn a rift or foothold will spawn right on top and kill the rare. I have seen it happen several times now....

...."Oh good there's Bahezerk, oh damn the foothold got him"
...."finally there's Gorehorn, crap the foothold got him"

it's frustrating to the point that I will give up trying to get achievements for days in a zone, or just stop playing for a few hours because of the deep frustration....mostly frustrated because Trion COULD fix this they just seem to ignore the problem and hope nobody will notice....bad form Trion, very bad form