Please contact support with the following questions:
Where are you located ?
What is your Current internet download speed?
What speed you getting when downloading from yams?
Are you using a download manager program such as Flashget & DAP?
Is the speed consistent 24/7 or only some times?
Please do a speedtest on:
and let me know what speed you getting.
Also try download the following file and let me know your download speed: