topic Re: AutoCAD2020 Using to Much CPU & no GPU in AutoCAD Forum

AutoCAD2020 Using to Much CPU & no GPU

cloweRE8TC — Thu, 20 Feb 2020 09:40:24 GMT

Every time I regen or switch tab my AutoCAD uses to much system CPU and the CAD stalls until this CPU use drops off, it doesn't appear to be using any GPU either.

I've attached a screen shot from Task manager and also the graphics tuner log, the log does say my card and driver do not meet the minimum requirement but it is on the Autodesk certified list.

I've tried all sorts of suggestions found on these boards and others and the latest driver from Nvidia is installed.

AutoCAD has become almost unusable on this PC although it has only been doing this recently so I wonder if a recent patch has messed things up.

Thanks for any help.

Chris

Re: AutoCAD2020 Using to Much CPU & no GPU

pendean — Thu, 20 Feb 2020 13:58:38 GMT

Post a screenshot of your ABOUT and GRAPHICSCONFIG commands pop-ups please.

I noticed you are not quite running the version posted at the Autodesk website

NVIDIA Quadro M2000

4096

Workstation

NVIDIA

Quadro Desktop/Quadro Notebook 411.95 [24.21.14.1195]

Re: AutoCAD2020 Using to Much CPU & no GPU

cloweRE8TC — Thu, 20 Feb 2020 14:16:05 GMT

I'm running the latest display driver from the Nvidia website but I did try the one listed on the Autodesk website and it made no difference.

Requested screen shots below.

Re: AutoCAD2020 Using to Much CPU & no GPU

pendean — Thu, 20 Feb 2020 21:39:35 GMT

Thanks. You look to be up to date.

This is a laptop, correct? If yes, as a test only, if you put it in airplane mode does the slowdown disappear?
If not, as a second test only, turn off hardware accelaration after you turn off airplane mode, any difference?

Re: AutoCAD2020 Using to Much CPU & no GPU

cloweRE8TC — Fri, 21 Feb 2020 07:40:19 GMT

This is a desktop PC, I tried turning off the hardware accelleration but it made no difference, & autocad re enabled it anyway.

Re: AutoCAD2020 Using to Much CPU & no GPU

cloweRE8TC — Fri, 21 Feb 2020 10:25:24 GMT

As a test I tried loading the same drawing on my laptop at home and the redraw time although slow was faster than the work desktop, which is odd as my home laptop is a 6 year old Thinkpad and obviously no dedicated graphics card.

I'll also try it on my home desktop over the weekend, it's even older but does have a modern Nvidia gaming card in it.

Re: AutoCAD2020 Using to Much CPU & no GPU

pendean — Fri, 21 Feb 2020 13:51:41 GMT

On your desktop, disconnect from the internet/web as a test and see if your slowness issues go away while working on local files.

Re: AutoCAD2020 Using to Much CPU & no GPU

cloweRE8TC — Tue, 25 Feb 2020 12:23:31 GMT

It doesn't make any difference.

Re: AutoCAD2020 Using to Much CPU & no GPU

pendean — Tue, 25 Feb 2020 13:21:31 GMT

Restart your PC.
As a test only, toggle your anti-virus software off for 20-minutes: now use AutoCAD2020 for those 20-minutes, still problematic?

Re: AutoCAD2020 Using to Much CPU & no GPU

cloweRE8TC — Tue, 25 Feb 2020 13:29:26 GMT

Rebooted but unfortunately I can't turn off the anti virus, it's a managed system and the only option available to me is scans.

Re: AutoCAD2020 Using to Much CPU & no GPU

pendean — Tue, 25 Feb 2020 13:36:56 GMT

Contact your IT for assistance for the test: have them observe it, if the issues go away they need to set your AV software to exclude AutoCAD files.

Re: AutoCAD2020 Using to Much CPU & no GPU

cloweRE8TC — Tue, 25 Feb 2020 13:38:59 GMT

Thanks I'll copy this to them, it's an external company that does it for us and the AV is one tailor made for them.

Re: AutoCAD2020 Using to Much CPU & no GPU

cloweRE8TC — Tue, 25 Feb 2020 14:24:38 GMT

My anti virus is going to be remote disabled for 20 minutes I'll let you know what happens.

Re: AutoCAD2020 Using to Much CPU & no GPU

cloweRE8TC — Tue, 25 Feb 2020 14:44:02 GMT

That has made a difference where a regen or tab switch was taking a couple of minutes it is now taking 15 seconds.

It also used a bit of GPU and not all CPU.

Re: AutoCAD2020 Using to Much CPU & no GPU

cloweRE8TC — Wed, 26 Feb 2020 15:35:53 GMT

AutoCadD files have now been excluded from the anti virus and it's made a big difference.

Re: AutoCAD2020 Using to Much CPU & no GPU

pendean — Wed, 26 Feb 2020 17:52:29 GMT

Glad it worked out.

Happy Cadding.

Re: AutoCAD2020 Using to Much CPU & no GPU

cloweRE8TC — Thu, 27 Feb 2020 07:18:45 GMT

Thanks for your help I would never have guessed that the anti virus was causing it.