Looks like someone actually tested it, flex is a bit slower but not terribly slower. https://stackoverflow.com/questions/39463220/does-deep-nesting-flexbox-layo

Looks like someone actually tested it, flex is a bit slower but not terribly slower. https://stackoverflow.com/questions/39463220/does-deep-nesting-flexbox-layout-cause-performance-issue https://stackoverflow.com/questions/39463220/does-deep-nesti... I'm guessing the solver engine would need lots of work to optimize, but I've never implemented that kind of thing so I don't quite know. I'm not even sure what kind of library could handle it. Something like OptaPlanner?