Just found a weird behavior, not sure it's supposed to work like this?
I usually use "Priority Level" at high in "Options", I tried to set it to "Low" just now, and it seems to be affecting only 1x GPU and it's usually the one that has "Tonemap" checkbox on.
I think it's supposed to affect all GPUs ...

"If a feature isn't good no more, just don't use it anymore" - Dom - Octane Houdini Quality Assurance Engineer


Hi lavrenovlad,
As you know we are messaging each other for a potential IPR change solution for you.
I'm sure Dom was not suggesting you not to use the Houdini setting forever, he ...

"If a feature isn't good no more, just don't use it anymore" - Dom - Octane Houdini Quality Assurance Engineer

Hi Bruce,

The IPR issue I reported wasn't fully fixed.. Now the IPR doesn't consume CPU as much when rendering which is great, but the IPR responsiveness is still terrible compared to 2 releases ago. Why was the IPR performance damaged since the last release and still wasn't fixed in this one?

The ...

Hi Bruce,

The IPR issue I reported wasn't fully fixed.. Now the IPR doesn't consume CPU as much when rendering which is great, but the IPR responsiveness is still terrible compared to 2 releases ago. Why was the IPR performance damaged since the last release and still wasn't fixed in this one?

The ...

Even the CPU is at 50% load constantly when IPR finished rendering and idling, did you put some kind of a Miner Bloatware there in the plugin?

Why does Houdini's UI/Viewport feel laggy now when the IPR is running? It literally was fine in 2025.4.0.0, and now I am getting 15 fps in the viewport with nothing but a CUBE in the scene.

Why does Houdini's UI/Viewport feel laggy when the IPR is running? It feels like a 2019 version of Octane Plug-in, are we regressing?
This genuinely ruined my day.

I noticed that switching "subsampling" for the IPR often crashes the engine!

Just noticed that you have "media" tab in the search bar instead of "medium" for mediums lol.