Artefacts in Shadow Renderelement on RTX in Bucket Mode.

[oglu]

Why do i get those squates in Bucket Mode?

Maya2019.2
Vray 4.3
NV Driver 441.28 on a Geforce 2080 Ti

Maya file attached.

[tanya_to]

Hello! Shadow render element is incompatible with adaptive lights and may produce artefacts.

[hermit.crab]

There is a warning message written in the log about the matter. As a workaround, you may manually extract the shadows element by rendering twice - once with disabled primary visibility on the scene's objects (that cast shadows) and once with the same objects hidden; afterward subtract the latter result from the former in post.