thanks box!
i actually solved it yesterday night as well by copying it to another file and exploding and regrouping.

@dave r said:

It looks something like this?
[attachment=0:24fxfyjb]<!-- ia0 -->2014-11-12_13-02-42.png<!-- ia0 -->[/attachment:24fxfyjb]

You're seeing Z-fighting due to surfaces being too close together for the OpenGL and your graphics card to resolve.

You are wrong it has nothing to do with the GPU.
ive had models imported from 3dmax that were even closer.
and ive built models with details smaller then a mm.
so its not the GPU.
i belive the problem is due to Autocad having a different system for understanding endpoints. and non of the skp plug-in importers can resolve it.

Im importing a not so big 3D DWG file into sketchup.
the imported model starts to "flicker" when i zoom in
and the worst part of it is sketchup cant lock on to end points of the geometry.

im using sketchup 14 on windows 7 pro
my computer is I7 3770k running at 4550, 16gb ram and Gforce gt760 gpu.

its not a GPU problem since all other even larger models work fine.

i tried using 3dmax as a mid way for the dwg file.
but 3ds and obj resulted in same geometry problem.

im including the dwg file.

any help or advice would be highly appreciated.

GROUND.dwg

Thanks a lot man! This will help in the stressful deadlines.
Know I can save the ir-map half size and no effect to render is great!

Hello i got this concern and no matter how many tests i ran i cant get a conclusion to put my concerns in peace... hopefully there's a pro here who can answer this questions with 100% certainty.

1)if i save the irradiance map in lower res. render and then load it when im doing my final high res render so vray wont have to prepass again, will that lower the quality of the final render in anyway vs. doing the prepass in the full final high res. render?

2)if i load the irradiance map from scene1 and use it to render scene2 (different angle for same space) is that ok? or does it messes up the render?

3)if i saved the irradiance map and then apply changes to the model (not the light) add something change reflection stuff like that, does that makes my irradiance map irrelevant and needed to be rendered again or not? same question regarding changing the light a bit?

this 3 questions driving me mad i cant seem to see differences.

thanks for the help in advance ":]

@dkendig said:

Have you tried rendering to a vrimg with the VFB mode set to No Memory? It might use less memory than rendering to an exr. I can't remember off the top of my head, but I'd give that a shot if you haven't tried already. We bundle a tool to convert from vrimg to exr.

Yea I tried it long time ago I also use the distributed rendering 64bit so no memory problem.
and the exr I convert via photoshop, just adjust the exposure\gamma(forgot which one) 0.4545
but thanks anyways

@valerostudio said:

In VR 2.0 there is a pack scene feature. This copies all the files (HDRI, maps, IES, etc) into a ZIP file. Its located in the V-Ray menu.

Yep found it! its under Plugins- Vray - Pack Scene...
Great - makes life much easier.

its true that most of the materials will move when I copy the skp file,
but the hdri, bump, displacement maps and some of the defuse of the materials is lost since its looking for the bmp files that does not exist in the other comp.

im using vray for the render. are you saying there should be a way to pack via the vray all the items that are in my project? (and i mean at once not each one individually that i know how to do).

like i pointed out in autocad you can etransmit your project and it will pack all the fonts,ctb and xrefs.

and in adobe indesign when you pack you project it also sends all the pictures, fonts and so on.

but in skp i don't see a way to "pack" your project with all the needed files (bmp maps and so on...)

well... no go
its still freezes, I turned off all the displacments, moved all trees to proxy and still gets stuck on the light cache.

im going to format the comp and reinstall all from scratch, it might be some runtime problem maybe...

Ok I got it thank you man for the advise! ill try it out tonight and see how it goes.

still can figure out why it works fine on the laptop and crashes on the desktop.
since its the same skp and vray and the specs are almost the same for both...