bevy_mod_picking causes some lagging

[Aceeri]

It is nice for the debug picking, but might be nice to only have it run when your are in the editor window?

I talked with aevyrie about it a little while ago and they said they were working on a rapier backend, so might not be a problem for long.

[aevyrie]

There is a lot of room for performance improvement (up to 10x?), see: aevyrie/bevy_mod_raycast#3 (comment)

This is something I'd be happy to put time into if there is a need for it. I had assumed most people would be using rapier for raycasting, and even have a picking backend for it in the upcoming rewrite/refactor: aevyrie/bevy_mod_picking#137

I wasn't aware this was a use case or problem, @jakobhellermann feel free to ping me on github or discord if you have any unaddressed needs for this crate. If you discover issues with the picking API, I'm sure the official bevy editor will have similar needs.