Very Poor Editor Performance

[TforTrevor]

Editor performance drops significantly when an object with a few SmartObjects is viewed in the inspector during play mode.
On my machine, it regularly spikes to 40ms to render the UI. It is also allocating about 0.7MB of garbage every time these spikes occur.

[sigtrapgames]

This is a known issue. Unfortunately I have to do horrible, horrible things to make the inspectors work well and although I've looked at some ways to improve things (and will continue to do so) it's highly likely that editor perf will always be an issue with SmartData.