12-05-2019, 09:45 AM -
For the initial release of Dark Souls years ago on PC which had a locked internal resolution and 30 fps, DSfix was released that fixed these issues by unlocking the resolution and 60fps. However enabling 60fps also affected jumping distance and if you happened to slide down ladders to the floor, you would fall through the floor into nothingness. So I am certain you are not imaging this, and I highly doubt there is anything that can be done to fix it other than going back to 30fps.