The simplest is adding a check mark on settings for "Restart previously running stacks". If unchecked, it will not restart the stacks after start up.
The 30 second (depending on option) timer can be enabled when the above option is checked. The purpose of this, is to cancel the startup of stacks if we really need to (ie. new idea and have to create a new stack, changed mind and need to do something else). otherwise, we leave the startup and let the countdown start the stack while also opening other dev apps.
It's a small update that helps a lot when you have too much on your mind.
Cheers!