Tomas Slancik

FJSam
is there any yet?

No
https://www.sidefx.com/docs/houdini/copernicus/intro.html#limitations [www.sidefx.com]

If you are talking about using Python Script TOP in-process to generate LOP nodes within the same session then I'm not sure you can make it faster that way

While I don't know exactly how the execution works in that case, I'd assume that they all would flood commands to the same in-process shell therefore at best resulting in the same execution speed and at worst in a complete mess as they may be trying to send commands over each other, but thats just my guess as I tend to avoid any sort of Python Script nodes (whether TOP, SOP, ...) to modify the current session's scene graph itself

Its difficult to say from a screenshot, but

- there is a warning on your uvflatten which may have more info
- you are promoting doors_a group just in spare input branch, so if after promotion it is vertex group, that'd mean that on main stream doors_a likely is not a vertex group therefore would not be found
- you can MMB on the Group 0 label to see if the expression correctly evaluates to expected vertex group list