Fusion 360 Latest updates slow performance in 2D sketch

[ahmed_afathalla]

Hi,

Today I was working with Fusion 360 perfectly after latest updates where everything goes wrong in 2D sketch with very slow performance and acting weird!! I'm running win7 and Radeon software latest version 20.11.2.

The new updates for Fusion 360 caused the slow performance issue as it was running perfectly for the last few month with no issues just before the updates is installed today.

If someone can help resolving the problem I would really appreciate it and it would be better if Fusion 360 team give us the option to restore the previous version of the software when running into issues with the updates.

[g-andresen]

Hi,

1. W 7 is no longer supported

2. Please share the file.

File > export > save as f3d on local device  > attach it to the next post.

günther

[ahmed_afathalla]

Hi Gunther

attached is the file that's showing slow performance.

Please advise.

[HughesTooling · Accepted solution]

Personally I'd say you have way too much in a single sketch. Fusion's sketch solver gets bogged down quite quickly with more than a few curves and dimensions. You are not helping leaving everything floating, doesn't look like you have a single curve fully constrained. You should anchor your sketches to a fixed point, as you only have one sketch the origin.

If this was working OK before the last update and not just down to complexity, I found a problem after the update as well. I found going to preferences and changing to OpenGL improved performance back to what I had before.

[ahmed_afathalla]

The issue happens only after the latest update and before the update I used the same file as is for more than a couple of month without any issues in performance, I found that switching graphics driver to "OpenGL" definitely fixes the slow performance problem and everything back to normal, so I consider this as a solution hoping it won't impact overall 3D experience with Fusion 360, thank you for your support.

[kadah.coba]

I am also experiencing this issue. Even on a new and very simple document I can repo this after only two sketches and a few elements. The issue only occurs while a sketch with any projections are visible while editing the sketch.

The repo I have found is simply: make a sketch with a rect, extrude the rect, make a sketch on the opposite face, project the face.

I'm guessing how projections are rendered in DirectX changed in the recent update. Switching to OpenGL mode "resolves" the extreme slowness, but somewhat choppy everywhere instead.

[robACD2C]

This problem is back with latest version Fusion 360 2.0.15299 x86_64. I changed to OpenGL and performance was back to original. I have Quadro RTX 4000. 32gb, 24/48 cores, not the machine. I've not tried the Directx versions. Sketch performance was so bad, the software was unusable. Thankfully I found a work around.