I tried this the the checkbox “disable multi-sample effects” (in unreal 5.2) does not disable motion blurred on my file outputs (it did however diable DOF and other effects). Reducing Temporal AA to 1 does fix the issue but introduces artifacts / noise as mentioned above…
EDIT: Ok cool i saw you mentioned setting Temporal AA to 1… as part of the workflow. Although i still dont quite understand why im getting artefacts on my sub surface materials with it set to this 