The minimap seems to have a custom HUD component that isn't OpenGL-compatible. With the minimap enabled, there's a pink square error right in my face. It doesn't appear without the minimap.
Other than that, it seems like the killfeed doesn't track kills properly, with most kills in my experience not being registered in the feed (a commenter mentioned that this might be because the shooter and target are further than 100m apart, and I'm not sure if that's intended or not).
Currently selected weapons in the HUD are also rendered as completely opaque rectangles without icons.
The mod also seems to be influencing the vanilla minimap by making actor blips really small and hard to see.

If you don't know how to fix these or don't want to, adding a note to the description that this mod isn't completely OpenGL-compatible would be useful for others.