Hi, unfortunately the largest factor in determining your speed is your latency which is primarily determined by the physical distance between you and the virtual server. You should have better performance to virtual servers in the US than virtual servers in the AMS region for this reason.

Additionally please open a support ticket whenever you are having a network slowdown so that we can run traceroutes and see what hop in the path is affecting your connectivity and then we can work with the upstream providers to improve service.

Thanks