I am a newbie here. I have had the same problem - slow speed in the evening. It happened at the previous rental house (we moved to another house as landlords moved back), it seemed that evenings between 5pm and 7pm the internet got really slow. It has been happening again at this current rental house and sometimes during the day the internet just dropped out altogether and I had to turn things off and back on a few times. I am on Infinity 1. Not sure what the problem was or has been?