Speeds are not consistent
I pay for 200Mb (I did register my interest in the 300MB service that is available in my area, but so far they have not bothered to contact me) - but regularly get less than 100Mb
the upload speeds are laughable - 12Mb maximum, but at least I always get that
if you dare to use the internet at peak times and hit their bandwidth cap, you can expect to have your speed throttled to about 40Mb, until it resets at about 1am
I am a SamKnows tester (have been for years) - so get a monthly report card on my connection - so i know exactly how dire the service is, and how often it fails completely.