When you enable Deferred Rendering, Flame of Ignaffar FX stuck in front of character to sphere and become ugly.
Deferred Rendering OFF
Deferred Rendering ON
UPD.
Curious, but bug also appear with switching screen resolution under monitor base one, even with disabled deferred rendering.
1024x768
1280x720
1600x900
1600x1200
1920x1080
2560x1440
Here is my Dxdiag:
DxDiag.txt (114.1 KB)
and one more from our community probably will be added later.
UPD2.
DxDiag_Rider.txt (100.0 KB)