Adding to the previous post of 10 Rendering Tips, I want to pass along a few more tips to keep in mind:
1. Rendering Process
When you render in Revit the Revit.exe process is not actually taking the bulk of the memory and performance usage. There is actually a second process that starts when rendering, called fbxooprender.exe, which is handling the rendering. So if you are looking to calculate memory usage or better track performance you can look for this process when rendering in Revit:
2. RPC Rendering & Windows Temp Folder Usage
Revit uses the Windows temp folder to store temporary files during the rendering process. When the rendering completes these .bmp files should be removed. These are typically related to RPC content, and have file names similar to RPC_TextureXXXXXXX.bmp.
However if the rendering process is canceled before completing these images may not be automatically removed.
When Revit is closed you can periodically delete leftover image files from the following folders:
Windows XP: %USERPROFILE%\Local Settings\Temp
Windows Vista\7: %USERPROFILE%\AppData\Local\Temp
3. Black Dots Appear in Render
Say you render an image and the final result shows black dots similar to the image below:
This is typically caused by light fixtures, using a material with high specular reflection. For example an aluminum material near the light source could cause this. To isolate this turn off some of the artificial lights around the scene under Rendering > Artificial Lights > toggle On/Off.
You can alternatively edit the light fixture and swap another material to test if the results are the same.
Along the lines of the 10 Tips, if you missed any of the previous posts I have included the links below:
10 Conceptual Mass Editing Tips
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