Not sure how this is solved or explained. Or how your faulty SSD is related to this issue. At your “working” config, you have EDL disabled, at the “faulty” config you have EDL enabled.
https://forums.unrealengine.com/core/image/gif;base64
So all it seems to come down to is to disable EDL, as that’s whats causing issue with else completely fine Animations. What is interesting though, is that you use Mixamo Animations, which are used in the Project where I got the Error as well. If other people who are having that issue are using Mixamo Animations, it would be a hint that EDL has some issue with those Animations for whatever reason.
All in all this seems like a Engine Bug, I don’t know where you take the confidence from, that it’s related to corrupted files.