@jett, no there's no lag - the changes should show up immediately. I think you're running the foreground agent, so make sure your commands are foreground commands. They'll disapear if you make them background commands and you're not running the background agent.
Thanks for telling me about the Google Sign-in button not working on that phone. I just tried it on mine and it worked. I'll research that phone, but in the meantime, did you get it logged in using one of the other methods like a password or a pair code?