You're probably looking towards the mountain tops, those also cause my PC (yes, PC) to lag like crazy as well. Best way to deal with it is to keep yourself not too large (around the size of a house or something) or not look towards that direction for now until it's fixed.
i've tried not to look and yes, lag is going from moutains (probably clouds), but game crashed anyway (19k temporary size buff, next buff crashed) when i was looking at other side of the map. UPD. i changed resolution and game didnt crash after same actions
