In a new project with UE 5.5, I’m getting strange artifacts when using SSS in a Substrate material, on a Nanite mesh and with a shallow depth of field (low aperture value). Is this a known issue with 5.5 Preview? Disconnecting the SSS node (connected to a simple BSDF slab) fixes the issue. Disabling Nanite also fixes it. This same asset worked fine in 5.4 (also using Substrate and Nanite). The artifacts also change as I click around anything in the Editor’s UI.