Add further time management to editor mode

[Xoriun]

When testing new designs in editor mode, I often need to run them over a longer time to detect minor flaws that could only be recognized after 10 or more minutes (eg. consumption is more than the input but only ever so slightly so the belt buffer is enough for some time, complex belt balancing is not working 100% reliably, etc...)
For "medium sized" designs this works well with the current time settings, however the bigger you build the slower the max speed is (obviously).
Afaik, a big bottleneck are the preparation and displaying of the graphics (or can be).
Would it be possible to add a mode where there are no graphics updates (apart maybe from the production GUI and similar), basically remove or greatly reducing this bottleneck?
Optimally, this mode could be exited via circuit conditions, which one can set in the time-editor GUI.
Off course this would only available in editor mode.

EDIT: If possible I would also try to implement this via a mod, but I doubt it is possible to suppress the render preparations through the API.