[ALREADY DONE] Speed up cropmarks rendering?

[Marsu42]

I just have to ask again, sorry if it's been answered 1000x: Is there any way to speed up cropmarks rendering? With the current speed, it's too slow for me to use all the time, and esp. cycling through multiple composition overlays (thirds, golden cut, ...) takes ages.

Feel free to [WONTFIX] if this has gone into and there's no way to do it.

[a1ex]

They are already cached (only first redraw should be slow), so I'd say [ALREADY DONE].