Hi,
I want to wedge pyro simulation and write each frame out along with an additional low res vdb

I tried chaining rop geometry output but it saved all frames of full res first then processed the saved output for low res version afterward

Is there a way to do this frame by frame, cooking both outputs in one go?

In order to do that you'll need to create the ROPs yourself (e.g. two geometry ROPs in /out), and point a ROP Fetch TOP at the last node in the chain of ROPs.

Thank you!