It is true that internet service providers do slow down the speed after a few weeks. From the promised speed of 5 mbps which is denied. However at best it is less than 4 mbps and often less than 3 mbps. And when you complain, you get repeated harassing calls for you to upgrade to FIBR. Your best answer is: Show me that you can give me the 5 mbps capability first, before I consider the upgrade.