IT depends upon your sources. How fast/bandwidth they are willing to offer you or have available, or else how you utilise sources by finding others also. See the following link & follow “ALL” the off-shoot links to find hints & extra skills to help solve your problem:
To continue files downlding (click on link)
Accelerators for p2p don't really work. The majority of people who have tried them have found them to be a lie/con. It makes you think you're doing better but actually not. This has been discussed on the forum before. Search the word accelerator on the forum using the search button above right.