I will attempt to answer this in as professional a way as possible.
bladeproject wrote:
Ok i have read so many speed issues and one thing i have to say for certain. Bittorrent, no matter what i do is simply slow compared to the dedicated d/l servers. I have set my upload to 8kb/s even thought im on adsl 512/128 and still no luck im stuck at the 25-30kb/s. I have turned the firewall off. Still simply slow. NOW here is the weird and strange thing. When i got the latest version of Bittornado, my d/l speed was almost certain 50kb/s for like a week. I was just happy with it, d/ling files of up to 1.4Gb at that speed, awsome. But after a week i tried to d/l a 4Gb file and that was it, the speed fell back to around 25 and ever since it stays this way for almost all my d/ls.
Something outside of bittorrent may have started interfering with your downloads at that time as just a coincidence.
bladeproject wrote:
Is it possible that the client doesnt reach the full d/l speed with large files i.e. more than 1Gb?? Plus, does the tracker have anything to do with d/l. For example would a conggested tracker be more likey to cause slow d/l speeds? Or is there some other underlying issue with the BT algorithms that may cause such effects. Was i simply lucky that after getting the latest client i was getting good d/l speed??
The tracker does not directly control how much speed you get, it just reports to the other clients about what your share ratio is. I've reached full download speeds (approximately 130kbyte/sec) with torrent files ranging from under 50MByte to over 4GByte, so it's not BitTorrent itself that can't handle the filesize.
bladeproject wrote:
Can someone please contribute to this and post their speed experiences with BT. Tell us if you always reach full d/l speed or sometimes or maybe even never? Were there plenty of peers/seeders when you getting slow speed or not. You just simply describe the environment when you get good and bad d/l speed. I would realy love to know if there are people out there that always get good speed constantly with every download (except when the file didnt have many peers/seeders).
I would personally start by running a spyware removal tool with updated data files, then checking for viruses and trojans and other bandwidth eaters.