AutoCAD LT running slow - is it my computer spec?

[ralph09]

Hi,

I recently bought a new PC and currently using the AutoCAD LT trial my computer appears to be struggling, which surprised me!

As far as I can tell the specs are more than adequate compared to the minimum required. I'd like to know whether my PC is simply not good enough to run CAD smoothly, or if it suggests there might be a different problem.

Drawing a polyline, with dynamic input, polar tracking and object snap turned off it is smooth. However, with all of these on, there is a 0.5-1 second lag on every click - very painful to use!

Attached are my specs, let me know if you need more info.

Thanks

[pendean]

Your LT version is....?
Your Windows version is....?

Is AutoCAD/LT using the Radeon Video card or something else?
Is your video card driver one from Autodesk (if there is one here) http://usa.autodesk.com/adsk/servlet/syscert?id=18844534&siteID=123112

[Anonymous]

Use "GRAPHICSCONFIG" command and turn off the "Hardware Acceleration" 

Hope this will help.

Thanks,

Glen

[ralph09]

Hi thanks for your quick reply. Sorry for my slow one - I thought I would get an email notification but didn't!

It's AutoCAD LT 2017 version N.52.0.0

Windows 10 64 bit

AutoCAD is using the Radeon RX 460 graphics card, driver version 21.19.525.258, DirectX 11.

I've tried hardware acceleration on and off, didn't notice a significant difference either way.

R

[ralph09]

The video card isn't listed on Autodesks certified or recommended list.

If that means it doesn't run smoothly then that's the answer. I was just surprised by that - I thought that AutoCAD LT should still be able to run smoothly with my hardware, even if my graphics card isn't one of the ones for which they've gone through certification process.

[pendean · Accepted solution]

A few things to try:
https://knowledge.autodesk.com/support/autocad/troubleshooting/caas/sfdcarticles/sfdcarticles/Cursor...

Turn off LINEFADING and LINESMOOTING variables in LT2017
If you have them selected, uncheck the boxes for MAINTAIN VISUAL FIDELITY and MAINTAIN DRAWING SIZE in OPTIONS command's OPEN&SAVE tab.
Ensure SAVE is set to the default 2013dwg file format for the trial period testing.
Ensure all files are 20123dwg file format for the trial period testing.
Did you by chance invoke any "migration" tool when you installed LT2017? that may contribute to the slowness.

Where do you store files that you access? Just curious, doubt is has much to do with it all but you never know.

[Emmsleys]

Following up on your thread, were you able to find a solution or a workaround?

Did any of the posts in the thread help with the issue?

Please use the Accept as Solution for those post’s that helped. It may benefit other users who might have a similar question or issue.

Thanks for your time.

[ralph09]

Thanks for all the help and input.

I had a play with some of the settings, and now am unable to recreate the original problem, which means everything is now working smoothly! Not sure exactly what fixed it!

Kind regards

Ralph

[Anonymous]

Looking at purchasing a computer with product details below for my company. Wondering if it will run Autocad LT/ Revit LT suite 2018, without a dedicated graphics card. Looks like it has shared graphics with 12 GB of total RAM, expandable to 16 GB RAM.

Product Details

Item #	801413
OfficeMax #	25597649
Manufacturer #	I34647403BLK

audio hardware	Waves MaxxAudio
Bluetooth	Yes
brand name	Dell
Carry Handle	no
diagonal screen size	23.8 inches
frontside bus speed	2,400 MHz
Gaming	no
Graphics Type	Shared
hard drive capacity	1 (1000GB)
hard drive type	hard drive
integrated speakers	yes

Liquid Cooling System	no
manufacturer	Dell
maximum memory capacity	16 GB
Maximum Turbo Speed	3.50 GHz
memory	12 GB
memory card reader	yes
memory type	DDR3L SDRAM
microphone jack	yes
model	Inspiron 3464
modem	no modem
operating system details	Windows 10 Home
Operating Systems	Windows 10
optical drive	DVD-ROM/CD-RW combo
peripherals included	camera; keyboard; monitor; mouse
ports	USB 3.0; USB 2.0; HDMI
processor brand	Intel
processor model	Core i7-7500U
processor speed	2.70 GHz
processor type	Intel Core i7
Product Condition	new
Product Line	Inspiron
screen resolution	1920 x 1080
Touchscreen	yes
TV tuner	no
warranty length	1-year limited
wired connectivity	10/100 Ethernet
wireless connectivity	802.11a/b/g/n/ac; Bluetooth

[pendean]

It's an average hardware setup for an average cad user.

[john.larmor]

Thank you, this seemed to have actually remedied keyboard input lag for me. Doesn't make sense but must have come about when AutoCAD attempted to get fancy with visual menus / windows / fading.

Not something one would want to turn off, because it's really one of the few new features in more recent versions, but it did seem to make the difference for me. No more, entering keystrokes again and hitting space bar twice.