When looking at the results below of the tests we do not see any issue pertaining to bandwidth, your server is located in our GRA datacenter, the results for bandwidth are adequate. (~924 Mbits/sec)
Note that our bandwidth is only guaranteed within our infrastructure, when the traffic routes outside our infra to other destinations including our other datacenters it is normal to see throughput fluctuate. It depends on the route the traffic is taking and the networks it goes through to reach the destination and distance is also a major factor to account.