Edges of an ImageHandleAdornments have black artifacting

[Mmm_Wafflez (Sammy)]

More than likely this problem is resultant of texture bleeding. A similar issue can happen with textured meshes. For fake skyboxes I recommend using a textured cube mesh.
Here are a few related posts:

Seams Visible With Custom Texture

Greetings, I am currently experiencing a perplexing issue while working on a mesh in Blender, and I seek guidance to ascertain whether this is a software glitch or a potential oversight on my part. To provide some context: I have been engaged in texture painting on a mesh in Blender. Following this, I proceeded with exporting both the mesh and its corresponding texture map. However, upon applying the texture to the map, an anomaly has been detected: From a specific distance, a distinct se…

Seams in my texture/Low quality textures

The likely cause is that you’re texture doesn’t give enough leeway to the UV borders, leading to parts of the textures that aren’t meant to be visible bleeding into the visible parts when the texture is downscaled (either when it is uploaded, where all image/texture assets are downscaled to a maximum resolution of 1024x1024, or when you get further from the object, due to Mipmapping). The solution is to bleed your texture over the borders by a little: [image] (I hope my diagram makes sense…) …

For a textured mesh:
To fix this just increase the bleed value in texture paint in Blender.
Texture Paint Options > Bleed

For ImageHandleAdornments:
I’m not sure you can fix this as these values are fixed for baseparts afaik, but it might work with an untextured mesh that has its bleed value increased.