Impact of backing tracks on upload capacity during session

[carvinae185@gmail.com]

Lately I've been revisiting how much data I'm trying to send to a session. With only 5mbps on the up side available I may revisit trying to send a stereo guitar plus vocal plus backing tracks.
As far as the backing tracks, I'm not sure how they impact the total upload which is being sent to all four of my jam buddies.

I've been sending OGG tracks to the sessions at about 164 kbs.  How is this impacting my limited upload bandwidth ( 5mbs up)?  Maybe somebody in my jam group with better internet speeds should be handling these?  Sample below

Format : Ogg
File size : 4.68 MiB
Duration : 3 min 59 s
Overall bit rate mode : Variable
Overall bit rate : 164 kb/s
Format : Vorbis
Channel(s) : 2 channels
Sampling rate : 48.0 kHz
Compression mode : Lossy