Currently I’m bouncing a lot of backing vocal parts in a project, there are some external fx in the project, but they aren’t involved with the tracks I am rendering, yet I still have to manually remove them in order to use fast render, having a tick box in the rendering options would be great as it would save me having to remember which external fx I put where (you could temporarily remove/disable them for the render then put them back afterwards). Not having fast bounce as an option when you have external fx (when the fx aren’t used on those tracks) is annoying!