? some medical animations can be quite intricate and use excessive memory

another thing to keep in mind is memory usage. Mathematica and El Capitan may give you indications how much is used.

3D cards are well known to do strange things if you exceed the memory capacity

keep in mind on that machine some of the memory is "shared" between macbook memory and OpenGL realtime rendering memory. i glean from the issue that the rendering is slow given any options that it may be an intricate model

I'm also not sure why he doesn't display his last name, but if you are curious you could follow the link on his profile to https://sourceforge.net/u/debguy/profile/

I confirm the flickering while rotating anything 3D, for example Graphics3D[Sphere[]]. The flickering goes away by turning antialiasing off. My machine is a MacBook Retina 12-inch, early 2016, latest OS. I hope I don't run into trouble when making presentations with a projector.

I am seeing the same lack of glitches on the 2016 MacBook after moving the slider all the way to the left (No Antialiasing).

I need to periodically make presentations, so I just bought and tested the Apple USB-C to VGA adapter. Regardless of having the Mathematica window located on the external display or the built-in display, the built-in display shows the glitches when rotating the head (slider back to Highest Quality)--though the glitches are not as persistent or noticeable.

I got an e-mail from tech support, and apparently they cannot reproduce this problem -- I sent them crash reports and a video. I encourage anyone who has this issue to contact tech support and let them know.

You could let them know my case number: [CASE:3685608] Issue with 3D graphics rendering on Mac OS

just in case.

They did notice that rotating the graphic was very slow.

For the MacBook Pros that have no problems: Can we specify if they have a dedicated graphics processor.

I have no problem with my 15 inch MacBook Pro that has a dedicated processor (an extra cost option for the 15 inch), whereas the 13 inch MBP, the MacBook Airs, and the current MacBooks all use the integrated Intel graphics.

For iMacs, I just looked at current offerings: the 21.5 inch all have integrated Intel Graphics, and the 27 inch all have dedicated GPUs. I think that this has been the case for some time.

I was a beta tester for version 11, and I think I missed this issue because 1) I wasn't working with 3D graphics at the time of the beta test, and 2) when I was, I used my more powerful computer.

So, the problem seems to show up with MacBooks and MacBook Pros that do not have a dedicated graphics processor. My 15in MBP is older and has a NVIDIA GPU. Does anyone have a newer 15in MBP with an AMD GPU.

I sent a bug report with the crash log from my 'wimpy' Retina 13 inch MBP. When I tried to duplicate the code, I got some weird graphics performance. I made a short movie with my iPhone and sent it to tech support.

no response yet.

Not a full troubleshooting procedure, but I tried a few variations:

1. Changed "Head" to "Hand". The flickering is much worse and persistent when scrolling the notebook. The entire menubar disappears to black with a little white noise near the apple menu.
2. Deleted the input and output cell. The flickering continued.
3. Tried the "Hand" again. Switching apps and back to Mathematica stops the flickering until the output cell is rotated again--even when scrolling the notebook.
4. According to Activity Monitor, CPU and Memory usage is minimal/moderate while rotating the hands and observing the flickering.

n/a

Ok, I do not see that on my other MacBook Pros with retina display. I even do not see this on an early 2015 MacBook.

Cheers,

M