Issue #23337: DLC2PillarBuilderActorScript spaming caused by Talvas Fathryon
This is about a bug that I haven't encountered myself, but those who encountered it don't seem to have reported it here yet.
There is even a fix posted on the nexus for this which should probably become a part of the Unofficial patch.
Full description can be read here: forums.nexusmods.com/index.php?/topic/919240-dlc2pillarbuilderactorscript-060177dbonpackagestart-making-dragonborn-unplayable/page-3#entry45028500
The bugfix posted on the nexus can be found here: www.nexusmods.com/skyrim/mods/88353
More information about Talvas Fathryon can be found here: en.uesp.net/wiki/Dragonborn:Talvas_Fathryon
From the description of the bugfix: "Fixes a serious issue in Dragonborn where the script adds Talvas to faction DLC2PillarBuilderFaction but he is not able to work on the pillar for either being essential or doing an active scene. This causes script spam when the second script tries to gather all in the faction constantly referencing him because he did not actively come the first time."
The fix removes the script from Talvas, but leaves him in the DLC2PillarBuilderFaction. I'm not sure this is enough to fix the problem.