Thanks Paul, I've attached a simple scene but you can just load any item into blank scene. Fire up the IPR and see the difference between having denoiser checked or unchecked in the imager. I've also attached a video showing what I'm seeing on my end in case you are experiencing something different. It seems having denoiser on cuts the IPR refresh framerate by roughly half. I can't say exactly because the octane IPR doesn't have an FPS counter, just going by eye.
Modo Scene
Video MP4
https://www.mediafire.com/file/kbag4c1trfh8u4t/Octane_for_Modo_IPR_Refresh_Denoising.mp4/file
Thanks for all your efforts this plugin is a joy to use.
Cheers,
Dino.