Lightburn software running slow after using Circle Array

LightBurn Software Questions
1

Hi All,
relatively new to Laser engraving and Lightburn software.
I have a question and not sure if it is a setting or something.
I just started to design a clock where I have found that after using the Circle Array option, the application starts to slow down, even selecting a single object is not smooth. If I use the Circle Array for the 2nd or 3rd time, it then almost becomes unusable.
My system isn’t slow, It seems to be Lightburn related, as if I generally move the window about, it moves in blocks, however if I move Chrome or Outlook its smooth. So not sure what is going on here.
System details are:
CPU is running about 12% (Lightburn is using 8.4%))
CPU 13th Gen Intel i5-13400F
16GB RAM
2 x 1TB NVMe Micron 2450 drives
4 x Samsung 870 QVO SSD 1TB Drives
NVidia Geforce RTX 3050 (8Gb)
Lightburn version 1.4.05
Windows 11

Can anyone advise of any issues they maybe able to assist?

Thanks

2

What happens if you disable wifi and/or internet?

I have a similar spec machine and it can get sluggish if windows decides to DL and update in the background. I’m on wifi, so just turning off the radio usually gets her running right again. Try as I might, I can’t permanently and entirely disable Windows autoupdate. :frowning:

3

Thanks for the help, not using wifi using ethernet.
Doesn’t really make any difference.
Weird thing here, if I save and shut down, then re-open, there is still a difference in sluggish behaviour.
If I make a clock but without using the Circle array, then its fine, very weird.

4

Is LightBurn using 8.4% while idle? As-in when not mid operation? If so, there’s something not right there. LightBurn should be consuming very little CPU at idle.

Can you check if CPU use increases with each subsequent Circle Array operation? What does it look like before you use Circle Array for the first time?

5

Good question…
Sequence :
Open Lightburn CPU - 2% then idles 0% (as expected).
Draw Circle 200mm x 200mm CPU 0.3
Select Circle CPU 3% briefly, 0%
use square tool, create 5mm x 15mm and centre to top circle. no impact on CPU.
select square and circle CPU peaks at 3.4% returns 0%
select Circle Array
Start 0.0
end 360
step 90
copies 12
use last object (unchecked) click OK CPU peak at 4.4 then 0.5%
With nothing selected, CPU fluctuates between 0 - 2.7%
highlight Circle and 12 pieces of 5mm x 15mm blocks CPU 2.3 % and 5.8%
Now create the minutes using the Circle array again, by using a 3mm Circle with settings as
start 0
end 360
step 45
copies 60
CPU now 7.5% and fluctuates to 8.6%
Select tool started to get as little choppy, (if that makes any sense).
Now we add the number 1 - 12 using the Circle Array tool.
Enter number 12 and place at top, elect the number 1`2 and then the clock, click on Circle array CPU now 30% and the dialogue box for the Circle array is slow populated the fields.
using the following parameters.
start 0
end 360
step 30
copies 12
CPU reaches 13.6%
unresponsive (very slow takes 6 seconds to change value of copies).
CPU 12.3 - 13.5% doesn’t go down from this.

Hope that makes some sense. Wonder if this is due to the new software release recently.
Thanks

6

Unlikely. Others are using this without issue so likely something unique to your system.

If you save the file, close LightBurn, then reopen the file. Does the CPU go high?

I tried reproducing your steps but some of the instructions were ambiguous. But I’ve tried a few scenarios and can’t get the scenario you’re describing.

In any case, can you upload the .lbrn test file for review?

7

Thanks, Please find the file attached…
If there is something I done wrong, then as already mentioned I am on a learning curve and following quiet a few of youtube tutorials.

clock temp.lbrn2 (290.6 KB)
clock temp1.lbrn2 (1.3 MB)

Appreciate the help.

8

This may have something to do with it.

image
image697×476 26.5 KB

9

Thanks Mike,
How did you find that out if I may ask…
and how to delete the duplicates.

Cheers

10

Edit menu at top and delete duplicates.
That is the temp1 file. Didn’t try the other one.

11

I just tried this on my similar win10 machine and have no issues, although I did use the last selected as center because it was creating unwanted copies otherwise.

12

Great stuff, thank you all.
Just need to find out why I created so many :slightly_smiling_face:

Thanks again.

13

The redundant shapes is the answer. I suspect this is from how Circular Array is being used and requires revisiting.

14

Even after deleting duplicates there a LOT of the big circle still there.
14 to be exact.

15

I show zero duplicates. Only substantive difference was my enabling of use last selected as center

16

Big Circles? 14… ok, you got me on your hook again… reeling in…
14 big Circles… errrr, can you give me a clue?

17

The outside diameter of the clock face.

18

Yup, outside circle.
1500 in the temp file
8640 in the temp1 file. 14 extras after delete duplicates.

19

Lightburn can be finicky about exactly how and when you select things. Are you by chance drawing a fence to select the items you want to array? A right-to-left fence will select EVERYTHING it touches…even 8000 stacked copies of a circle. You can’t see them, but they’re there.

Minute hash array made 12 (12x1) copies of the big circle. Second hash array made another 720 (12x60). Numbered array made another 8640 (720x12).

Or thereabouts. Depending on what was selected.

20

Gotcha, that makes sense. Cheers :slight_smile: