Has anybody else had issues with Fusion 360 becoming really slow with robot CAD? Even things like extruding have started become really slow as the design gets bigger.
I’m running Windows 10,
Ryzen 9 3900X
32GB DDR4
RTX 2080 Super
So I’m pretty sure my computer specs aren’t the issue…
Try running an internet speed test where you usually CAD.
I might be mistaken, but i believe fusion 360 doesn’t need internet to cad (unlike onshape). All of the cad is done locally. I’ve launched and used it a couple of times with no internet.
I have the same problem. It’s probably the worst CAD program I’ve used.
It’s only useful for CAM and sharing files.
We might switch to OnShape next season
Things like extruding shouldn’t have an issue, but F360 is cloud based in a sort of stupid way. There are some operations that do appear to be dependent on internet speed, usually related to autosaving and such.
This is a known issue with Fusion 360, it’s really not designed to handle large assemblies. There are workarounds (like hiding sub-assemblies) to improve performance, but in general I think Autodesks solution for now is “use Inventor”.
This YouTuber had a really interested video about the performance issues with Fusion360:
It’s at my home. 100mbps up, 100mbps down. 20-25ms ping.
That’s really unfortunate. Might be switching to OnShape or SOLIDWORKS next year.
Edit: also, Wintergatan is awesome! I love Martin’s videos.
Fusion 360 has a few issues but our team has found that it is worth the pain. Simplify the assemblies to help speed up the loading time.
Clearly the issue here is that you need a threadripper
If you want to save performance in regard to autosaving, I have a friend who sometimes cads offline to avoid it. Apparently helps with performance some.
I do have access to a computer with a 2950X and 128gb of RAM - maybe I’ll try to run it on there just to see how it goes.
Are you using an SSD or a hard drive? Mabye that will impact performance?
It’s an NVME drive connected over PCIE 4.0. So I doubt that’s an issue either.
Isn’t there a thing about how Fusion and Inventor only use the CPU and little to none GPU?
For example, when I run Inventor my CPU is always at 100% and it runs mostly fine, but my GPU is like at 8% and didn’t change between me opening Inventor. 
My suggestion is to not use CAD models straight from the source. Instead modify them to remove any internals before adding them to your robot. E.g. remove the PCB from the Falcon motors and the gears from the VersaPlanetary gearboxes.
It should be using GPU, why else would they sell max level performance GPU’s?
Internet makes a huge difference with fusion. My advice would be to download another program to use in low internet locations, then export as a step and import the step into fusion if you are working with a team that needs access to the files.
I am not a huge fan of fusion, but my team uses it mainly because it is free, we can share designs, and it doesn’t require much computer power to run effectively.
If you remember team 444’s cadathon bot, we were eventually limited by our internet to the point that we had to call it quits with any additions to our design. We had about 14 hours left and really wanted to add a deploy-able intake and finish adding details to our electronics, but it just became too much of a pain to work with. It also didn’t help that the native fusion file was nearly a gigabyte and had several thousand individual bodies.
Try HSM it has all straightforward CAM of Fusion with so much more built in.
IDK, but looking at my task manager it says otherwise.