Slack hogs RAM and burns battery like crazy, and it's a bloody chat app -- as simple as it gets.
Now imagine an Electron version of Inscape with complex vector editing, gradients and co on screen...
It doesn't match the performance of a native equivalent, but doesn't seem unreasonably slow or bloated either.
- Boxy SVG - https://itunes.apple.com/us/app/boxy-svg/id611658502
- Vectr - https://itunes.apple.com/us/app/vectr/id1204645754
100% feature parity is a meaningless test in any case. Sketch doesn't have 100% parity with Inkscape, which doesn't have 100% parity with Affinity Designer, which doesn't have 100% parity with Illustrator, etc.