There are plenty of proper searches that you can do in a day that go fairly quickly. I often do today's birthdays and get a ton of results. Movies that a specific actor is in, musicians for a specific type of music. Today is day 2,543 for my streak, and I have never had any problems keeping it. I do actually spend time on each page and read it though, and I often learn cool stuff. Only takes a few seconds, which is required to get the points now anyway. I do it randomly throughout the day rather than trying to focus on getting them all done at once.
The email reading has only been out for a couple of months, so the most recent Edge update might have broken it. Seems to coincide for me.