Picture View render drops materials - sometimes?

[moose69]

I have an animation running - the Live viewer renders materials but the Picture viewer drops the material if if run a sequence.
If I render a single frame to the Picture viewer or sometime restart C4D the textures will appear, but erratic.

Doesn't matter if I render/save to Render AOV group or standard save

ryzen 3700X
64GB RAM
3080Ti
C4D R20 Octane 2021.1.4(R4)

[aoktar]

There may be several reasons, without trying your scene can't help much