5,1 GTX 680 Poor CAD Viewport Performance

[kartcrg]

Is it a 2GB GTX680? Can you check the VRAM usage as well?

So far, my understanding is that's not CPU limiting, and not GPU limiting. However, still possible VRAM limiting. Especially if you turn on high-res or effects will cause a significant performance drop.

If CPU limiting, usually you won't see any difference by reducing resolution or effects.

And since the GPU itself is not at 100% as well. I will guess it's something graphic card related but not the GPU. So, the next suspect is the VRAM.

Yes, 2GB card.

Is that "GPU Memory Utilization?" (Active viewport nav is roughly the first 2/3s of graph)

 

[Foamsoup]

(deleted)

 

[Asgorath]

Please set linear scale in all the OpenGL Driver Monitor graph, the default log scale is kind of useless. The fact you are barely cracking 30-40% core utilization means you are absolutely not GPU limited and are likely limited by a single thread running on the CPU.

 

[h9826790]

Please set linear scale in all the OpenGL Driver Monitor graph, the default log scale is kind of useless. The fact you are barely cracking 30-40% core utilization means you are absolutely not GPU limited and are likely limited by a single thread running on the CPU.

Then why the CPU single core usage only vary between 25-70%? If that's CPU single core limiting, the usage should stay at 100% or above.

I agree that's not GPU limiting, but not CPU single core limiting either. Should be something else.

 

[thornslack]

Curious problem, seems like the OPs hardware is capable. The GTX 680 should handle anything the 780m does, and I thought kepler drivers were fairly stable. Could the software be buggy on the cMP?

Edit
I see you're running a scaled 4k monitor. Could this be an effect of the scaling catching up on fine line details?

 

[orph]

it may be vram, maybe test a simple project :S i dont know much about cad so hard to gess

found this - How to optimize settings in Fusion 360 for performance
https://knowledge.autodesk.com/supp...e-settings-in-Fusion-360-for-performance.html

 

[kartcrg]

I see you're running a scaled 4k monitor. Could this be an effect of the scaling catching up on fine line details?

4k issues crossed my mind, running at the low res version of the same 3008px scaling doesn't change anything though.

You can see issue here (the video makes the framerate worse than it actually is):
https://knowledge.autodesk.com/community/screencast/c2da9195-f868-4568-a6ca-8ebce7e89df7

You can see the edge lines disappear during navigation and then reappear once movement stops. On my other Macs, only the shadow disappears during navigation and reappears immediately after; this doesn't bother me.

 

[ActionableMango]

Same version of OS X on each Mac?

 

[kartcrg]

Same version of OS X on each Mac?

Yes. All 10.12.2

 

[kartcrg]

Something I just noticed is that the edge lines re-appear faster when using the mouse orbit tool compared to using my 3D SpaceMouse. When using the orbit tool, they reappear almost instantly after any view movement. Not sure if this could be because the SpaceMouse adds to single thread load?

 

[kartcrg]

This has been solved!

I'm so happy! The Fusion 360 development team suggested switching from "Auto-Select" graphics driver to "OpenGL Core Profile" and that did the trick. I don't understand why this did it but you can see the conversation here if you'd like.

Edit: For those curious, I found this explanation of the OpenGL Core Profile driver.

I can even have "high-resolution graphics" checked and it works beautifully.

I really appreciate your guys's help and time on this. Thank you!

 

[orph]

im relay happy it's fixed

 

[kartcrg]

im relay happy it's fixed

Me too mate! Very happy with the value of this cMP now! For $1600, I have the most powerful CPU rendering machine Apple offers (I guess the 12 core nMP is about the same for Keyshot rendering but couldn't justify the $ for such old tech) and I can now model on it was well!

Now just praying we get a proper nnMP workstation in the next few years, if not I'll be miserably forced off OS X..