any idea why BT always drop line

E46

I have Bitcomet 0.70, I have no problem with it, but after I download and run the Spyware Doctor.  My BT drop line like crazy. It always drop to 0 Kb/s for all of them. and the speed is very slow, even the upload speed is much lower than I set. b4 is always top of the limit which is 50 Kb/s. now is only 10 to 20. , M4 z% n5 K: q" A; D* q, L
Should I unistall the Spyware Doctor. (I didn't ture it on guard.)
2 G6 }5 A2 N5 |7 [& w1 v1 uAnyone can help, please.