Improve Navisworks Display Settings with a GTX 980

I’ve had a mixed experience using the Nvidia GTX 980 card in Navisworks and Revit, but I have one particular tip that helped in Navisworks 2017:
Turn OFF CPU Occlusion Culling

My CPU is an i7-6700K that I generally OC to 4ghz. But obviously there is some slowdown when both of the Occlusion Culling boxes are ticked.

Aside from the usual tips of using ‘Guarantee Frame Rate’, Automatic Clipping Planes, and playing around with the File Options – Frame Rate, I found that turning off CPU Occlusion Culling and leaving GPU Occlusion Culling on made a real difference for the better.

Discussion

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Matt Stachoni 2017-05-08 15:01:10

I too have had awful to middling results in Revit with a GTX 980. Horrible stability problems and selection prehighlighting issues have made it a real bear to work with correctly. I've tested it on several machines, motherboards, and operating systems, and it seems to be a real PIA to work with effectively. Oddly enough my GTX 970 runs fine with no issues whatsoever. I've found that using older Nvidia drivers often fixes GTX 980 issues in Revit. You can usually find older drivers to experiment with here: http://www.nvidia.com/drivers/beta I recommend completely uninstalling the Nvidia driver related software completely. First use the Control Panel > Programs and Features as usual, but then I recomment using the Display Driver Uninstaller (DDU) tool that will also remove any leftover files and registry keys. See here: http://forums.guru3d.com/showthread.php?t=379506 Go here to download the utility: http://www.wagnardsoft.com/ Once ininstalled, install the oldest driver first and see if that fixes Revit performance. If it does, install the next newer version. Keep going until the GTX 980 starts to tank. Then roll back the driver to the previous version.

Luke Johnson 2017-05-08 23:23:43

Wow that is awesome advice Matt, thanks. Do you recall which driver version worked best for you?