Slow sketch function

[hato54]

The sketch is so slow it's hard to work.

No other software is running (Chrome excluded)

Could this be a graphic problem?

I think I really had enough CPU power

Windows 7

Intel Xeon @ 3.4 GHz 

16 Gb memory.

/Håkan

[jeff_strater]

Sketch problems are unlikely to be graphics problem (it's not impossible, though). If you can share your design, we can take a look at it.

Are all sketch operations equally slow? (curve creation, dimension, constraints, dragging)? How big is the sketch (how many curves, etc?) Anything else you can describe about your design?

Thanks,

Jeff Strater (Fusion development)

[hato54 · Accepted solution]

I tested the same functions on my laptop (PC), it works ok.

Then I made a new test on the PC workstation it works ok also.

It seems some kind of interference with my SpaceNavigator.

Thanks

/Håkan

[Zephyr958]

Hello Jeff,
I can't see a solution to this problem and don't know if you are still monitoring it. I started  having the same problem since the middle of august 2017 but now its just impossible to do anything. I just finish using the clean uninstall tool, did a virus scan, look for any similar complaints and finally reinstall. all other function seem to be fine. It is taking more than five minutes to draw, extend trim, can't edit anything etc. on both my desktop and my laptop. hope you can help me with this.
Thanks

[jeff_strater]

Hi @Zephyr958, yes, I am still monitoring this.  If you can share your model with me, I'd be happy to take a look at it.  It sounds as if the sketch in question is just very large.  Is it only in this one model that you see problems, or does this happen with all sketches?

Jeff

[Zephyr958]

Just sent you an invite, this problem started in other designs but I reported a more urgent problem I was having with the mirror function to brianrep. Thanks

[jeff_strater]

Thanks for the invite, @Zephyr958,

I think there is more going on here than I first suspected.  At first, I was convinced that the problem was the large number of symmetry constraints from the mirrored geometry.  Sketch Mirror, when used with large numbers of geometry, is a performance hog.  

Usually, I recommend that people should not do this scale of mirroring in a sketch - you are much better off if you build 1/2 the sketch, and do the mirroring in the solid world, instead.

So, I went through and removed all of the symmetry constraints.  Even, then, the performance is horrible.  This is a complex sketch, but it should be well within Fusion's capability.

However, I went through and deleted all the symmetry constraints, and the performance, while better, is still bad.  We will need to dig into this further.  Thanks for sharing the model

Jeff

[Zephyr958]

Hey Jeff
Is their any progress on this problem?

[jeff_strater]

Unfortunately, no.  The sketch team was looking at this design this week, but I don't have any more information for you at the moment.

[autodeskQET2Y]

I am having the same problem, sketching is so slow it's basically unworkable. Just drawing a simple line in my sketch takes around a minute.

For example, try to draw a line parallel to the selected on, (top left in the image, middle left in the sketch) it takes really long.

Drawing in other parts can be much faster, but in specific places it's really slow.

Let me know if you want me to share it with you too @jeff_strater

[jeff_strater]

Yes, @autodeskQET2Y, if you want to share the design, I can take a look.  Sketch performance is directly related to the number of lines, curves, arc, constraints, dimensions, etc in your sketch.  If you can keep your sketches as small as possible, your experience will be much better.  I'd be happy to make some recommendations.  One thing from the top:  I'd recommend staying away from large sketch patterns, mirror/symmetry on large numbers of curves.

Jeff

[Anonymous]

I am also getting the same issue. I thought initially it was because of complexity so i deleted most of the sketch and when i mirroed about 8 splines - 16-20 points attempting to move one point takes approx 1 min of loading time to make a change unspecific to where i tried to move the point. My instinct tells me theres some infinite math loop happening somewhere with the the mirror line but really i have no idea where the fault is. 

[Anonymous]

SOLUTION
Instinct was correct. There was an issue with the mirror line being attached to the central origin point. I deleted the mirror and projected a new line still in the center but not attached to the origin point and it is now usable 🙂

[NIDO-DEV]

Hello all,

I am having this type of slow performance on every sketch that was some number of constraints. Even with this, the CPU is not working at 100%, so it seems some issue on the Fusion's side. There also hundreds of times when I get error messages for operations that should be possible FOR SURE. Sometimes changing a dimension of a single line (which is not constrained to anything) takes 20 seconds or more. This normally happens when my designs are almost finished, so I can work, but the lost time is huge.

The sketch functionality should be considerably improved.

[Icchan^]

I agree with the sentiments here.

I've used Inventor for years, and I dread when ever I have to use Fusion for what ever reason since the Sketching is very, VERY slow even for really simple sketches with just a few constraints and few lines (no splines).

After that, changing a parameter can take 1-3 minutes.

Inventor can hog through really complex and large sketches on old hardware like a champ.

I'm sure you can fix this issue if you want.

Will it require you guys to rewrite the whole sketch engine along with how constraints are calculated? Probably yes. But you can do it.

[hansvaneven]

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