I'm wondering if anybody has seen a glitch like the one below (the shadow strip that appears in front of the cube). I have been trying to fix it for some time but the cause eludes me. I'm using a PCSS implementation in my fragment shader and Parallax Occlusion Mapping to add some realism to the ground texture as well. I'm still trying to get through the root of the problem, which is to determine what kind of artifact this is but I'm not too sure. It seems like a self-shadowing "acne" issue but in that case why am I not seeing acne across the rest of the ground texture, and why does it only appear when panning the camera at that particular location? Any help would be kindly regarded.