I am using DynDOLOD, I also use Mod Organizer so the mods do get disabled. I think ENBoost is built into the ENB I'm using. But disabling ENB with shift+f12 didn't help. What did help was playing in first person only. I can't say for sure that the hitching is gone, but it's certainly much harder to notice now. I have not tried riding on horseback in first person yet, but at least while running on foot there was a significant difference.