I tried FreeCAD over a year ago and it was so crashy it was useless. My goto for doing CAD stuff on Linux is currently SolveSpace. It's pretty great except it

I tried FreeCAD over a year ago and it was so crashy it was useless. My goto for doing CAD stuff on Linux is currently SolveSpace. It's pretty great except it becomes unusably slow once models get complicated with lots of instancing through step+repeat operations. Otherwise, its UI is minimal and stays out of the way for the most part, the way it encourages components residing in separate files then be linked into assemblies is very intuitive for a programmer like me, and it's proven to be quite stable. I hope SolveSpace can get more attention to improve the performance problems, because I often find myself making models too complicated for it to handle before it gets bogged down then I end up halting progress on the project adding another "profile solvespace and optimize whatever is preventing further progress here" entry to my endless TODO list. Edit: Here's some context on the kind of SolveSpace limitations I've encountered... The most recent thing was modeling a heat exchanger made of transversely stacked Coroplast sheets. I modeled the channel details of Coroplast w/a large step+repeat between two layers, then linked that sheet into an assembly twice in the two transverse orientations, those were then each step+repeated with a 1-sheet gap to accommodate one another to form the entire stack. It quickly degenerated into half-hour redraws and I gave up finishing the assembly. It's really too bad, because putting something like that together is otherwise super fast and easy in SolveSpace. I love using it for quick engineering project mockups. If anyone is looking for a parametric CAD optimization rabbit hole to go down, please geek on on SolveSpace! I'm sure others would appreciate it.