A new topic on DAZ forum
in The Commons
The topics of the forum are very useful because they allow to classify the questions by categories.
I think a Rendering engine section would be very useful because it covers cross-cutting issues.

Comments
https://www.daz3d.com/forums/discussion/442982/new-ds-filament-render-engine/p1
https://www.daz3d.com/forums/discussion/288661/show-us-your-iray-renders-part-vii
https://www.daz3d.com/forums/discussion/514336/show-us-more-of-your-3delight-renders
https://www.daz3d.com/forums/discussion/368721/octanerender-2019-for-daz-studio-new-free-tier/p1
we do have threads but only the iray one seems to stay on the first page in recent posts
the 3Delight one pops up regularly but not as often