Maya Vray Proxy rendering issue.

[brandon_pollard]

I have a hopefully a quick question. I'm rendering a scene for work and it's a big overview shot of a large forest. I used Vray proxies with preview geometry to render the thousands of trees needed. The preview geometry being used is 18 polys a piece per tree. When I hit certain amount of proxies I started to get a lot of lag in my viewport. Since then I've even went back and deleted most of the proxies out of my scene and I'm currently sitting at about 320,000 polys in the scene. It's running a little smoother but still pretty slow. But even when the scene was completely loaded down I had somewhere in the neighborhood of 2-3 million polys showing in my viewport. Normally my rig can handle 5-10 million worth the polys of any regular models in a scene with little to no problem. I was curious what might be causing this and is there anyway to repair it. I can give more specs and images if needed but I was wondering if anybody had any information/reason why this is off the cuff. Any help is greatly appreciated.

My Specs
2 1080 TI GTX GPU's SLI together.
AMD Ryzen Threadripper 1950X 16-Core Processor ~3.4GHz
2 32G TridentZ ram sticks
Windows 10
Maya 2018

[francomanko]

How are you scattering the proxies? Not using mash by any chance?

[brandon_pollard]

No, I'm not. I've never had much luck with Mash working correctly. I got a little basic script I run that instances, scales and rotates objects. I use that to make big chunks of tree proxy instances at a time. It's a python script. I have another script that I run to drop objects down on surfaces. That one is a MEL script. I ran that a few times on this project as well because of all the elevation. Other than that what you see is what you get basically.