Poor signal paying for 900 getting 50

[davehu]

For a few weeks I have been getting poor performance, 50 mps download while paying for 900. 

[Ripshod]

How are you testing your speed. A bottleneck anywhere can cause slow speeds. Wifi is the main offender.

Are you using a third party router with a built-in speedtest - that's the best way to test.

[CrimsonLiar]

Actually, you have to be careful with router-based speed tests too.  Unless you have a performance router, then the CPU may not be able to keep up with the demands of speed tests on 300Mbps connections and above!  So, you may often be better off using a powerful PC/MAC connected to the router by a (1Gbps capable) cable, making sure that QOS is off).