Is there anything that does the opposite of this? A lot of our current tests run in a browser window, and generally I leave it in the background as I don't want

Is there anything that does the opposite of this? A lot of our current tests run in a browser window, and generally I leave it in the background as I don't want to stare at my tests running. However, when they are backgrounded they slow down and sometimes fail due to timeouts. I haven't actually tried, but does opening a new window get around this even if it does not have focus?