New Sandbox feature: how long does a sandbox takes to resume, when a user accesses the app?

Hi, From the FAQ: Sandboxes have a sleep mode - if an app in a sandbox is not used for one hour, it will go into sleep mode and automatically resume as soon as a user accesses the app. In which case the first user will experience a small delay in start-up time. I know this delay might vary, but can we get an estimate of around how much should this time be? 5 minutes? Regards,
1 answers

It's usually less than a minute, but I can't give any guarantees that this will remain so if we decide to change around hardware/virtual machines.