Frequent crashes on GPU when using undo to change node adjustments (displacement Scale)

[daniel2SH2D]

As the title says, Arnold crashing C4D R23 on GPU if I make an adjustment to the scale of a displacement node, refresh IPR and then Ctrl-Z.

The displacement node is one of 2 being layered together using a vertex map as the alpha of the one being changed if that helps.

[Stephen.Blair]

Is it with any displacement setup, or just this specific shader tree?

[daniel2SH2D]

I'll check today.

Honestly, I'm finding that GPU is *very* crash prone, especially when using Arnold scatter and displacements, and when it quits, it just quits hard, no popups, no freeze, no warnings, just a still moment and host software vanishes into the desktop.

RTX 3080 with the good capacitors 😉

Will update on the Ctrl-Z issues after a cup of Joe...

[peter.horvath6V6K3]

Could not reproduce this so far, undo is working fine for me (C4DtoA 4.0.2 Windows). If you find that the issue is specific to your scene, please send it to us.

If you are on Windows, you can check if a dump file file is written after the crash in the bugreport folder (e.g. HOME\AppData\Roaming\MAXON\Maxon Cinema 4D R25_1FE0824E\_bugreports\minidump.dmp) and send it to us to analyze.