PreRendering process (vrscene generation) is very slow in scenes that use Proxy a lot.

[flat]

PreRendering process (vrscene generation) is very slow in scenes that use Proxy a lot.
It takes 3 to 10 minutes to write vrscene. (more proxy is much slower)

All vrmesh is read from the local.

Where examine to debug?
There are too many dependency nodes?

Using V-Ray for Maya version 3.60.03 on windows.

=== log =====================
Clearing exporter memory...
Total time clearing exporter memory 0h 0m 0.0s (0.0 s)
cmd: vrend -q
vrend result: false
cmd: vrend -isRendering
vrend result: false
cmd: vrend -q
vrend result: false
cmd: vrend -width 960 -height 540 -camera persp1_render_01 -layer defaultRenderLayer
Creating and initializing renderer.
Creating exporter.
Exporting scene to V-Ray.
Parsing light links time 0h 0m 0.1s (0.1 s)
Exporting render settings.
No image file name specified; using scene name
Using image file prefix "tmp/TED_UP_02"
Exporting scene lights.
NDAG: 1131
+ creating plugin: vrayRE_Denoiser - RenderChannelDenoiser - 2158C120
Exporting scene geometry and materials.
Number of dependency nodes: 1871
Translating scene geometry for V-Ray
Total time translating scene for V-Ray 0h 0m 0.4s (0.4 s)
Rendering.
Clearing bitmap cache memory...
cmd: vrend -q
vrend result: false
cmd: vrend -isRendering
vrend result: true
Updating frame at time 1.00
Total time updating frame 0h 0m 0.0s (0.0 s)
Writing to V-Ray scene file.
Multi-threaded vrscene writhing with 12 threads
Current numeric locale is "C"
Writing vrscene file...
File "D:/Data_1/WORKS02/3Dworks/TED_city/scenes/TED_city_maya/test.vrscene" exported
Total time writing vrscene file 0h 3m 51.4s (231.4 s)
Total frame time 0h 3m 51.4s (231.4 s)
Total sequence time 0h 3m 51.4s (231.4 s)
Exiting render().
Render complete
========================

[yolov]

We are aware of the issue and there should be some improvement with 3.60.04. You could try if it's better with the new version. We're still working on making even further improvements in the future.

[flat]

Here is a simple scene that dupricate a lot of Proxy.
Load maya scane and pre-render process are very very slow.

V-Ray 3.60.04 Nightlies is also slow.
Is there a solution?

tested on Maya 2018

[flat]

It may be solved with ParticleInstancer or V-RaySceneObject now.

[yolov]

We'll have a look, thanks.