App hangs while sketching when making changes

[Anonymous]

I'm a beginner with Fusion 360 and finding it almost unusable because of slowness and the app hanging and needing to be killed.

I don't see this in tutorial videos so it seems something isn't right. Maybe it's hardware, but it's a 3 month old laptop and the things that hang the app (most sketch operations such as dragging a rectangle, creating a dimension, filleting a corner) don't seem to be graphics-related. Maybe it is something about my sketch that's causing Fusion to do massive amounts of processing. For example it has a square patterned in an 8x32 grid.

Attached is a screencast of one example of this - looks like maybe the hang is happening when I drag over existing lines - something to do with snapping?

This app hang lasted a few minutes. Other hangs take less time.

[GPU Information]
GPU Device: Intel(R) Iris(TM) Graphics 550
GPU RAM: 128 MB (Integrated card)
GPU Driver API: DirectX 11.0
GPU Driver Version: 21.20.16.4550
GPU Driver Date: Unknown

[Graphics Effects Settings]
Anti Aliasing: Off
Ambient Occlusion: Off
Object Shadow: Off
Ground Shadow: Off
Ground Reflection: Off
Selection Display Style: Simple
Transparency Effect: Better Performance

[Limit effects to optimize performance]
On

[Anonymous]

Some more detail:

Memory usage is 48%

App uses about 27% CPU while hanging.

Attached system info.

The design/drawing/project: http://a360.co/2jJO9HV (NB: nothing gets drawn - dunno if that's a bug)

[jeff_strater · Accepted solution]

Hi @Anonymous,

Your sketch is pretty complex for Fusion to handle efficiently.  The operations you are trying to do with that sketch will succeed, but they will be very slow.  You will be much better off if you just create that grid plate as a single extrude, then one of those grid holes as another Extrude, then use feature pattern (in the Model workspace, under Create) to make the grid pattern.

Here's a screencast showing this workflow:

Jeff

[Anonymous]

NB: you might find that that drawing/design/project is now messed up - I continued working on the design/drawing/project, creating new sketches to work on (which seemed to help), but eventually got so confused with what was going on that I deleted some bodies and sketches, and the timeline is now entirely greyed-out, with no history marker. No idea what's going on - I think one problem is as a beginner I just  cant tell what's a bug and what's correct behaviour! 🙂 

[Anonymous]

Thanks Jeff - I posted before seeing your reply. Thanks - I'll try that strategy instead. I guess you just pick up this kind of thing with experience.