I’m not sure if I completely understand your post. First, you do understand that your speed test 880/167 are measured in “bits”, and your Bit comet is measured in Bytes.
When I take your max upload of 167kb/s, and divide by 8 = about 20kB/s
Therefore you should set your max upload to about 16kB/s
I would also disable DHT (then restart bit comet), unless you have a specific need for it, since it will use bandwidth.
Suspect
ps. you really should fully go through our settings guide