I’m experiencing some intermittent flashing on one of my metal textures, specifically a trim sheet texture on a flat plane. This issue occurs when I’m at a distance and stops when I get closer. I’m not quite sure how to resolve it. I’ve done some research on ray tracing bugs with NVIDIA cards, moiré patterns, and mip maps. As I’m learning Unreal, I’m finding it overwhelming with all the information available, and I’m struggling to pinpoint the cause and solution for this problem. If anyone has any advice, I would really appreciate it. I’ve uploaded an image that isn’t very clear, but I can provide footage that shows the flashing more clearly. I noticed this didnt happen before until i started playing with lights??
Hi @charlottemay351
let’s see…
Mipmap Issues: Check texture settings, especially Mip Gen Settings. Try to turn off Texture Streaming and see if this resolves the issue.
LOD (Level of Detail): Ensure LOD transitions on your mesh are smooth. Check LOD settings twice and try testing without automatic LOD generation enabled.
Lighting Issues: The flash can be produced by ray tracing or other lighting features. Try turning off Ray Tracing, check lightmap resolution, and examine dynamic lighting settings.
Tessellation/Parallax Mapping: Try disabling these effects if your content uses them and check if the issue stops.
Z-fighting: If the plane is sitting next to another surface, Z-fighting might be the cause of flashing. Try to adjust depth bias or move the plane a bit.
Post-Processing Effects: Disable post-processing effects like motion blur or screen-space reflections to check if they are the issue.
Debugging Strategy: Isolate the problem by disabling one setting at a time, test with a simple material, and adjust camera distance.
hello i managed to solve the issue. I started toggling some options and found that the temporal upsampling feature was enabled, which was causing the flashing issue. Now that I’ve turned it off, everything’s good!