I got this issue on which I found nothing around, at least not that specific: as the title says, all in-combat vibration/feedback/rumble just stop working after doing a mistery, a sync point or anything on the map. Trasure chests doesn't always got the problem, but completing misteries and sync points got 100% chance of disabling my controller. The vibration remains for nearly anything else (jump off a cliff, swim ecc.ecc) but not for the the combat. This issue also make Eivor attack's animation "shake" o "shiver" sometimes. The only thing that resolve temporarily the problem is restart the game, but this not always work.
Of course with other games I've got no problems. It started happen with Ragnarok, never had this issue before (got all the previous dlc) Tried to reinstall 2 times, not worked at all. The game is barely playable like this, so I really hope that some of you can help me.