Exactly, as Stagehand now runs inside the browser, you'll save on the round trip.
Also, enabling batch actions will further accelerate your test suite.
Tests typically drive the browser on the same machine. What round trip are we talking about here? Process-to-process over CDP?
judging from their documentation looks like promised increase only achievable with their main product
Nope, you can also deploy and manage your own browsers as soon as they accept custom extensions.