downloading speed is very slow

Hi , i have problem that when i m downloading any file bittcomet downloading speed is vey slow

before ,when I started download speed is slow.but when my downloads and uploads number become high,speed is high.now speed is high,many time it goes to more than 500mbps.so ,download more and get high speed.goodluck.

When downloading TV series my download speed drops to below 50KBS, Why???

when you provide the required info we can help you with speed issues