Heavy Graphical Artifacting - Ray-Traced Reflections

I'm playing a late-game side quest and noticing some heavy artifacting that only occurs if I have Ray-Traced Reflections set to "On." It does not occur if the setting is "Selective" or "Off."

I have seen bits of similar artifacting in other places, but nothing that was particularly consistent. This, however, has been constant in this instanced area for the quest. I've attached a screenshot with the setting set to Selective (with no visible artifacts) and several with the setting set to On, where you can see the heavy presence of graphical artifacts above the fireplace.