I’m having an issue in my 5.3.2 project where my substrate Carpaint material is flashing bright artefacts’ in a grid over the object with the material applied. Its a single frame but glows and fades out over the next second of frames.
The material is using a vertical layer with SSS MTP for the clearcoat, its per pixel byte count is 48 and budget is 80. Only these more complex clearcoat materials in the scene have this problem and I can’t simplify it any further whilst still having the clearcoat look.
The flashing happens very occasionally on a 4090 desktop, and a lot more often on a 4080 laptop, especially when rendering through Movie Render Queue, making the renders unusable. It doesn’t seem to happen in response to any action, it can be sat idle and will happen. The scene is close to the 4080’s 12gb vram limit, so I expect some sort of budget is being hit, causing it to flush and restart a buffer of some kind?
Unfortunately I can’t upgrade this project to 5.4 as there’s other unrelated bugs stopping me using that version which should be fixed in 5.5.
