@Trixarian As to my understanding, z-fighting is a pain to fix, but I'll get straight to the point.
As you can see here, the texture for the vent is having clipping issues (marked in blue), the other vent texture to the right (marked in red) is how it should look.
Here's another little screenshot of the bug.
The best way to really see this issue in action is really just played through the first few levels.
@Trixarian As to my understanding, z-fighting is a pain to fix, but I'll get straight to the point.
The best way to really see this issue in action is really just played through the first few levels.