Issue:
I actually don’t know what causes the issue but the construction time of ram go up to 1m 32s for Mongols at some point of time during the game. I haven’t found any description under normal gameplay that might cause the issue.
Trigger Event:
The only thing I can suspect is packing up and unpacking the siege workshop. As the contruction time is normal between packing up the first siege workshop.
Repro Steps:
Try packing up and unpacking the siege workshop