Which means if you have a 4GB card and a 6GB card, and the scene to be rendered requires over 4GB VRAM, the 4GB card will be excluded. When using Iray with multiple GPUs, all the data being processed for rendering has to fit into each card’s VRAM independently.Long story short, I finally realized the only reason the other card was running was to run my monitor, my GPUs were fine, then I contacted DAZ… I then fired up my GPU monitoring software and saw one of the cards wasn’t being used. When Iray switches from GPU to CPU I can hear it, because the fans on my water cooler crank up. When it first happened to me I thought one of my GPUs went out.I have verified that this is a known issue with the Daz Development Team.Also, if you keep the number of render preview windows open at a time to a minimum, when your Render Target is New Window, it seems to help the VRAM from getting as full.

Then everything will be back to normal again. The solution, when it switches over to your CPU, you have to close Daz Studio and restart it.It can even happen when letting the render finish completely, though, for whatever reason, it seems to manage the VRAM better in this second scenario. Which typically equals longer rendering times. If you’re tweaking a scene, rendering then canceling, rendering then canceling, eventually your VRAM will get full and Iray will stop using your GPU for rendering and switch to your CPU.With that being said, I’m just going to dive right in… I think they’re especially good to know if you’re considering buying a new GPU. While spending time cracking out on it, I’ve figured out a few things I thought were important and worth sharing. If you haven’t figured it out already, I’m a big fan of using Iray for rendering with Daz Studio 4.8+. Preparing to Sculpt, Plus a Couple Tips.Editing/Fixing Morphs – How to Remove Unwanted Vertices From Morphs.Rigging Custom Characters – Adjust Rigging to Shape.obj to any Modeling App for Creating Morphs Creating Characters and Morphs for Daz 3D Figures Using ZBrush & GoZ.

Preparing to Sculpt Daz 3D Figures, Plus Tips.

Sleeveless, Shorts, Capris & Camo Textures Add-on.

Ribbed Superhero Bodysuit Texture Add-On.

Ribbed Superhero Bodysuit for Genesis 3 Female(s).

Open Back Superhero Bodysuit for Genesis 3 Female(s).

Kaira HD for Genesis 3 Female & Genesis 8 Female.

Daz not using gpu