Slow performance

[peterm]

Selecting and moving high density mesh objects is extremely slow in anything except 2D wireframe mode.

I've tried Quadro and GTX graphics cards. I've got 32Gb RAM and 12 cores. I've tried tweaking all the settings I can find.

I've tried hardware acceleration on and off.

Is it just and AutoCAD thing as I don't have this problem in Inventor or Fusion or 3DS Max or even Draftsight.

[rkmcswain]

You could have 128 cores and AutoCAD is still only going to use 1.

But shouldn't it be doing this processing on the GPU?

What version of AutoCAD?

[peterm]

2011 at the moment, but I've tried the trial version of 2018 and it's not much better.

[dgladfelter]

Do you have the graphics driver recommended on the Autodesk hardware site? 

http://autodesk.com/graphics-hardware

The newer versions of AutoCAD have significantly improved 3D performance, but much of those performance gains are powered by the GPU. If you do not have a supported graphics card, there's a good chance your machine won't take full advantage of those improvements.

Similarly, when testing your drawing in 2018, did you by chance with a version of the drawing saved to the 2018 DWG file format? 3D performance was one of the big reasons for the DWG file version change this year.

[Alfred.NESWADBA]

Hi,

>> but I've tried the trial version of 2018 and it's not much better.

Please upload the drawing + the exact steps you do to see the slowness ... we will try then the same workflow with your drawing on our systems.

Also start command _ABOUT and command _GRAPHICSCONFIG and send us screenshots of that both dialogs.

- alfred -

[peterm]

Hi Alfred,

Here are the two screen grabs you asked for and a test drawing attached.

[peterm]

I used to have an old Quadro card which was supported and now I'm running on a new GTX 980 Ti which isn't supported.

I've tried converting the blocks to 2018 format and then inserting them into a new 2018 drawing.

Copying the mesh objects in anything other than 2D wireframe is totally unusable as the cursor sticks and jumps around.

[Alfred.NESWADBA]

Hi,

please show me the screenshots for AutoCAD 2018, not for 2011.

- alfred -

[peterm]

Sorry Alfred.

Here are the 2018 screen grabs:

[Alfred.NESWADBA]

Hi,

thank you for the screenshots!

Well, please let's start with installing the latest update for AutoCAD 2018, it should be Update 1.1, your AutoCAD does not have installed the update.

I will look to your files later, just missing time currently to dive into your geometry.

- alfred -

[Anonymous]

Hi,

I've been recently doing some 3D in AutoCAD 2018, and similarly found that it was running unreasonable slow for my computer specs. I am running with a Xenon  E3 3ghz, 32g ram, quadro p4000, SSD, etc... with all drivers up to date. Rotating the model was ok, but when I would activate a command (like push/pull) it would grind to a halt (even on a relatively small 3D model). With the Hardware I have, I see no reason why AutoCAD should run anything but liquid smooth, with full graphics settings on, however, I got the best performance from tweaking the hardware acceleration settings (vs turning it off or on completely). Here are my settings:

[Alfred.NESWADBA]

Hi,

can you please look to this video, this speed looks ok for me (for that type and density if geometry).

Is your system slower or do you think that my video is already too slow?

- alfred -

[Anonymous]

Hi Alfred,

Viewing the objects isn't a problem, it's when I try to copy them that everything comes to a halt.

Peter

[Alfred.NESWADBA]

Hi,

>> Viewing the objects isn't a problem, it's when

>> I try to copy them that everything comes to a halt

Depending on the visual style command _COPY uses (including selection and showing base-point and destination point) between 3-10 sec.

For me that type if object is not really a CAD-object, it's more a visualization geometry for rendering.

Therefor I would edit the block and create a less complex geometry on a second layer, while moving/copying/playing with the positions I would freeze the geometry layers of the complex display and would only thaw that layers when rendering or maybe when plotting.

- alfred -