This is exactly what I did. I had been using 2.36 for months without a single CTD. I did a clean upgrade of 2.38 today and all of a sudden I was getting CTDs when entering new cells (even on a clean save). Disabling DynDOLOD.esp fixed the issue. The 100% repeatable CTD I found was walking in and out of Cracked Tusk Keep. It is, though. In my particular case with my assets. After reinstalling 2.36 the game does not crash at all. There is something causing the game to crash when the DynDolod.esp created by 2.38 is activated, that does not happen under 2.36. Rolling back to 2.36 absolutely fixes the problem, I get no CTDs whatsoever.