Simulation spine is surprisingly slow

[stephane-caron]

I just started a simulation spine but it's surprisingly slow, how come?

[stephane-caron]

Make sure you switch Bazel's compilation mode to "opt" when running both robot experiments and simulations. The compilation mode is "fastbuild" by default. Note that it is totally fine to compile agents in "fastbuild" during development while testing them on a spine compiled in "opt" that keeps running in the background.

_{This Q&A was imported from the Vulp readme.}