I have been having intermittent disconnects and slowdown for the past few months which seem to be increasing in frequency. For several hours last night as well as the past hour since I got home today my connection speed had dropped to the point of being unusable for my purposes (0.89Mbps down, 10.9Mbps up):
No one else was using my broadband during this period, the only connected devices being my iPhone, my desktop PC (wired, this is the device is tested with) and my chromecast (TV was off). My routers logs show the following warnings:
...While writing this my connection speed has shot back up over 40Mbps again, which while not close to the advertised 100Mbps is usable. If there is anything I can setup to help gather information regarding this intermittent issue please let me know.