static ip depends on the server you are assigned to. if it is saturated then you will not get full speeds.
when i was using it, was getting around 800mbps down and 600mbps upload speed with gateway ping of 10 ms constantly.
But i was having issues with slowness of few websites which include github. Though youtube, and all other streaming websites were not having any issue. Also torrents were also giving full speed. So Speed was not really an issue.
i had tickets opened for slowness and they were not really helping. So i found out that their routing of delhi gateway was messed up which was causing slowness on few routes. they were unable to fix the issue so i deactivated static ip.