Return of Reckoning

Good afternoon, faced with such a problem, only 2 quest mobs Shadowflame Shade, but they are not in place. I started looking for it, and found it here(in the screenshot). Interaction is not possible. Return them to their place) a huge request. thanks
Screen here https://imgur.com/a/FZz74nm

Hello all. Why mobs and characters began to move sideways or backwards, so displayed on the screen. I used to notice this, but it was rare, and now even mobs in the capital go backwards .tell me what can be associated with (hardware, system)
Thx.