So, I've been playing the game for a little while. Everything seemed to look just fine, and I do have some retexture mods installed; 2K textures, Tamriel reloaded, and some of Gamwich's rustic retextures. I don't have any lighting mods -- I only have COT and Dark Dungeons for ENB; which have minor changes to light from what I know.
As I was playing, when I reached the part where I fight the first dragon, I saw this issue with the fire light:
It looks weird and it's annoying. I would appreciate it if one of you fine users can tell me what I'm doing wrong.