Speed test is not reliable. Try to download a relatively large file (10MB+) and check the download rate. If it is 890kbps(105kBps) or more, then you have a true 1Mbps connection.
I have a question as well. I've recently upgraded to the 2Mbps plan. The first day of the month, when I logged in to see my bandwidth consumption, I saw that I still have a 1Mbps (10GB) connection. I sent them an email complaining about it and yesterday it changed to 2Mbps (20GB) but the speed is still capped to 1Mbps though. I called them in the morning and the sleepy support guy said "it's still in progress, it should speed up to 2Mbps by Monday". Does that make any sense? Has anyone had this issue with Ogero before?