Thank you for the reference. I don't want to bother developers if this is not easy to fix.

I wanted to just point that the problem is more serious with the upgrade ghosts while the construction/destruction job doesn't get similar level of problem. My guess is that the construction and upgrades are ...

I am building belts over long distance using spidertrons. I found that after making upgrade ghosts for large number of belts (10,000), any upgrade/redirecting requests on belts are very slow to handled by construction bots. Specifically, if the ghost request is made inside the roboport/spidertron ...