The sticky part could be use of P2P software or other. Your post is too unclear on details so check the Networking forum sticky and get another machine to test if it's your machine.
-> Download accelerators for years have never done a thing for us or clients. But people keep trying them.
I am based in the UK.
My current computer has a modest 500MB RAM and operates via Windows XP. I currently have an Orange (UK) broadband contract which offers download speeds up to 8Mbps together with a standard Orange modem and ethernet cable cable. (I don't really need a wireless connection at this time). I have installed "OnSpeed" software which purportedly increases actual download speeds by up to several hundred percent and Uniblue software which itself purports to optimise broadband connections.
The above arrangement achieves download speeds of between 2-5Mbps in practice (as measured by thinkbroadband.com) but it still feels "sticky" and even downright slow most of the time. Moreover the system regularly "freezes" for 30 seconds or even more, which disrupts my work flow considerably.
I wish to substantially improve my broadband performance by replacing any - and if necessary all - of the above. Could anyone please advise.