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Daz to Blender bridge, Blender slows and crashes

Levon777Levon777 Posts: 3
edited March 2021 in Blender Discussion
I'm going to start by listing my PC Specs GPU: Geforce RTX 2060 Super (EVGA, Brand new as of 1 week ago) CPU: AMD FX- 6300 Six-Core Processor Ram: 32gb DDR3 SSD: Samsung 870 QVO 1TB (System is booted through this SSD and I run Blender and Daz through it) HDD: 1tb, not sure brand but it doesn't matter. I feel like with the machine I'm running I should be fine with using Blender, however when I bring in my character from Daz over to Blender everything seems to run smoothly with no issues what so ever untill I hit the Material Preview mode button, at that point the entire system slows to a halt, the 32gb of ram are completely used within seconds, the SSD fluctuates randomly from 30% to 100% and Blender goes unresponsive until it eventually crashes, Edit: The GPU does use about 7.1 /8gb of Vram during this process, the same happens when I try the render preview with eevee. but everything seems to work fine if I use cycles as long as I switch it in preferences from "none" to using the Cuda cores on the GPU. My question is what exactly is happening here, and what can I do to fix it? I can't fix the materials on the characters without Blender immediately shutting down, thanks in advance. I just upgraded the systems Ram, SSD and GPU last week, this is all still new to me, I've done significant research but I can't find anything about this anywhere.
Post edited by Levon777 on

Comments

  • TheKDTheKD Posts: 2,691

    Rendering device should be on cuda or optix. If it's on none, it's gonna be thrashing the CPU.

  • Levon777Levon777 Posts: 3
    TheKD said:

    Render ing device should be on cuda or optix. If it's on none, it's gonna be thrashing the CPU.

    I did that already, switched the render to Cuda and selected my GPU, it's not really rendering thats the problem though, it's when I try to show the materials preview. Like I said if I select render preview in cycles I have no issues, but if I do materiel preview (not render preview) that's where the problems begin. I can play around all day in render preview with zero issues. My question is why am I having this issues in material preview, and only when I transfer a character over from Daz Studio.
  • Razzle-Dazzle3DRazzle-Dazzle3D Posts: 32
    edited March 2021

    Levon777 said:

    I'm going to start by listing my PC Specs GPU: Geforce RTX 2060 Super (EVGA, Brand new as of 1 week ago) CPU: AMD FX- 6300 Six-Core Processor Ram: 32gb DDR3 SSD: Samsung 870 QVO 1TB (System is booted through this SSD and I run Blender and Daz through it) HDD: 1tb, not sure brand but it doesn't matter. I feel like with the machine I'm running I should be fine with using Blender, however when I bring in my character from Daz over to Blender everything seems to run smoothly with no issues what so ever untill I hit the Material Preview mode button, at that point the entire system slows to a halt, the 32gb of ram are completely used within seconds, the SSD fluctuates randomly from 30% to 100% and Blender goes unresponsive until it eventually crashes, Edit: The GPU does use about 7.1 /8gb of Vram during this process, the same happens when I try the render preview with eevee. but everything seems to work fine if I use cycles as long as I switch it in preferences from "none" to using the Cuda cores on the GPU. My question is what exactly is happening here, and what can I do to fix it? I can't fix the materials on the characters without Blender immediately shutting down, thanks in advance. I just upgraded the systems Ram, SSD and GPU last week, this is all still new to me, I've done significant research but I can't find anything about this anywhere.

    What specific character, clothing, and hair items are you using when you experience this memory consumption issue? Additionally, are you using the default materials for each of these items, or have you customized any of these as well? If so, which materials have you added in these cases?

     

    It sounds as though something about this character requires more memory than your system can supply when you switch to this render preview in Blender that Daz Studio is able to compensate for, for some reason. My current hunch is that you may be attempting to export hair or clothing with dForce simulation settings along with the character (as these items are not yet compatible with any application outside of Daz Studio), however, there could also be some material that is breaking this preview process in Blender for some reason as well.

    Post edited by Razzle-Dazzle3D on
  • BugBug Posts: 0
    Hi, I don't know if this is still of any help but this is how I solved this: replace the original Daz shaders with blender materials. I tried the blender decimator, until the model looked almost ugly and it still - was super slow playing animations - was super slow on rendering and sometimes even crashed blender - was super slow to even load when switching from solid to material view then, in a fit of desperation, I started getting rid of the original Daz shaders and replacing them with Blender BSDFs, even with textures and... miracle! Even the original model, without any decimator, even with clothes and hair, was fast and smooth in animations, texture shading was coming up instantly, rendering super fast Hope this helps
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