Modifier Parameters not working/accurate in Portal

Currently attempting to adjust the "Vehicle Spawn Delay Multiplier" does not work as intended in Verified Conquest servers.

The tool tip states: "Multiplies the default timer that spawns or respawns vehicles. Values below 1.0 make spawns faster, values above 1.0 delay spawns for longer."

It defaults to 100%. At this value, Jets for example seem to respawn after 90 seconds. Setting this value to 50%, the overlay that progresses on the vehicle icon appears to fill in 45 seconds, but the vehicle is still unavailable for the full 90 seconds.

On the flip side, setting the value higher than 100% causes the overlay on the icon to take longer than 90 seconds to fill, which seems to be correct, although the jet (for example) would technically still be available after 90 seconds - the overlay, however, locks you out from selecting it from the deployment screen.

So it seems the modifier correctly changes the UI element, but not the actual spawn rate of the vehicles.