Weird visual artifacts with certain lighting effects

[The_Hyphenator85]

I've started playing the game for the first time since upgrading to a new rig, and I noticed something strange upon the first encounter with Agatha; the outlines of the polygons of her model are intermittently visible, resulting in a strange digital grid-like look to her. At first I thought it was just her, but when I completed the first Trial of the Blood and used the Moon Seal on the Shrine of Oshtur, I noticed that when the seal was placed and lit up, the same polygon grid effect was happening to that object. So it seems like the specific cyan lighting effect that's used for both Agatha's model and the lit Moon Seal is causing the issue.

Anyone else experienced this and/or know how to deal with it? I can't find anything searching online. Here are my specs:

Windows 11
Intel i7 12700H
Arc A770
64 GB RAM
Running the game on a Lexar 2 TB NM970 SSD

EDIT: I figured it out; the artifact is a result of some kind of problem with DX12. Running the game in DX11 fixed it, and disabling the 2K launcher fixed the stuttering that running the game in DX11 causes. Leaving this post up in case anyone else has this issue, because I couldn't find any other info on it. Hopefully it'll help.