I'm having a similar problem except this is on a vanilla load order. Dyndolod runs fine but LODGen is taking ages to finish. I'm completely at a loss as to why this is happening as I've been using Dyndolod forever and have never had this happen. After doing some searching on google I've seen that the TreeFullFallBack=0 is one of the causes for this but I've never touched that setting and it's still at 1. At the time of this post, LODGen is working but it's been running for 4 hours when before the entire process took 20 to 30 minutes for a full load order. I've noticed in task manager that LODGen isn't using more than a gig of memory and about 15% of my CPU. I have 16 gb of ram and a 4790k non-overclocked. Any help is appreciated.