Poor viewport performance during navigation on 5,1 Mac Pro with GTX 680

[sambirchenough]

My 12 core 3,46ghz 5,1 Mac Pro with 48gb of ram is still a beast for CPU rendering. However, with its GTX 680, Fusion 360 viewport navigation performance is much worse than my iMac & MacBook Pro (GTX 780M & Radeon Pro 460). All 3 are 4gb graphics cards.

Only on the Mac Pro do the edge lines (shaded with visible edges visual style) disappear during navigation and take a second to reappear once movement stops. I'm driving a 4k display but "use high-resolution graphics" is unchecked. Unchecking "limit effects during navigation to maintain framerate" leads to an unusable framerate. The latest nvidia web driver for the card makes no difference.

Any insight here would be much appreciated. Do I need to upgrade the graphics card?

[cekuhnen]

@sambirchenough

Perfect! I thought that this must be a settings issue. Today Fusion 3D engine is pretty snappy compared to some years ago.

[sambirchenough]

I'm so happy.

More complex model at high res graphics, no problems!

Looks like I'll keep the cMP for a few years!

Now I wonder if I could have gotten away with complimenting it with a 13" MBP instead of the 15"...