why so much lag in pve

KingWhyteboi

Title says it on on xb1 and ive watched twitch while playing and ps4 and pc dont have the intense frame lag xb1 does in pve. I was going for lorebooks a few days ago and had like 10 frames per second the whole time and didnt see 1 person and my mount was being stopped by every pebble along the way. I fully understand zergs in pvp make it lag in pvp but while are we getting the same lag in pve lets not even get started about malestrom on xb1 you turn your camera and itll get you killed alot of the times it makes it lag so hard!!!