I've been pulling my hair out over the last few days, trying to get a 3D scanned object into Fusion 360 so I can perform boolean operations of it + some other modelled objects.
This has turned out to be beyond frustrating, and most of it seems to be due to Fusion 360 aborting at low artibrary limits when it shouldn't be. There are a few primary dialogs I keep on hitting, which in any other software package would just be educational warnings, but in Fusion 360... they've chosen to have the software abort just because it might be slow. WTF?
I'm completely ok with slow performance after a conversion, as there's very little needing to be done after the conversion. I can let it run overnight if needed. eg, I just need it to work.
What I'm not ok with is Fusion 360 aborting a process that I absolutely need, in order to finish the several days of work I've already put into modelling. Automatically aborting without asking, is absolutely the wrong behaviour from Fusion 360.
If for some reason Fusion must Abort, then please make the threshold user configurable. Some of us have decent hardware, so it's not likely to be slow at the current threshold. (as evidenced by when I reduce mesh detail to get just under the threshold, and the performance is still real-time in most things)