We sometimes brew extract, usually when it's more-socially-acceptable to save time on any given brewday. We boil for 45, adding a pound of sugar right at 45, then the rest of the extract at 15.
Once you have a process template down, stick to it and you're going to start getting great results.
Millenium is our favorite hop for bittering a 45 minute addition. Briess Wheat is kinda funky, so you're not alone.
It takes a long time.
We think if we don't want it to have special features, I just boil it for about twenty minutes.