I'm working on a tactical testing map, and I want an option to turn build times on and off depending on what scenarios the players feel like testing. I tried the "Allow Cheat - Fast Build" action and it appeared to have no effect. Anyone have any ideas?
None.

An artist's depiction of an Extended Unit Death
Events
Timer - Every 0.05 seconds of Game Time
Local Variables
Conditions
Actions
Unit Group - Pick each unit in (Any units in (Entire map) owned by player Any Player matching Required: Structure, with at most Any Amount) and do (Actions)
Actions
General - If (Conditions) then do (Actions) else do (Actions)
If
(Progress of (Picked unit) slot 1) < 99.0
Then
Unit - Set progress of (Picked unit) slot 1 to 99%
Else
This will be near-instant construction for all units (I'm not sure if it affects structure build times). Just disable this trigger when you don't want it to happen, and enable it when you want it to happen.
Setting to 100% progress in theory would be instant construction, but in testing, it just removes the unit from the queue and does not create one. Alternatively to this, you could get the unit type of the unit in the queue, create that unit at the position of the building, and then remove the unit from the building's queue. It would be a tad bit faster than the method presented above, but it's much more artificial.
P.S.: Allowing a cheat is different than activating the cheat. You have to type out the cheat in-game for it to execute.