Upgrade Time Caps

[Gnuoy]

In Object Editor the "base" and "increment" times for upgrades are capped at 300s. Does anyone know if it is a 300s cap in-game? If base and increment times are both set to 300, would the upgrade go 300, 600, 900 research time?

Base is the starting time and increment is the amount of time added for each additional level of the upgrade to be researched.

Spoiler: image

 

[PurgeandFire]

If you hold down shift while clicking on the field, it'll allow you to put a number higher than 300. I was able to put 500 seconds as the time base, and then when I tested it in game (with a stopwatch on the side), it correctly took 500 seconds to research. So it seems like the in-game limit isn't 300 seconds, at least.