got chee

We had a (maybe?) similar problem, that when sometimes just entering a material library lop with some materialx and karma nodes inside, Houdini would crash and also just before crashing one could see “evaluating python” in the info bar.

It didn’t happen on every workstation though and was with houdini 19.0 on Windows.

If I remember correctly the problem stopped when we removed an external python installation from the windows user directory.

Cheers
Michael

Hit "d" when you're mouse is over the viewport to open the Display Options.
Then under the "Camera" tab you can set the View Mask Opacity.

Cheers

Do you mean how fast the smoke/density fades away? You can control this through the "Dissipation"-setting.

Hope that helps.