[_urga]

It will need to monitor and induce at most 20-50ms bufferbloat when uploading, regardless of whether the traffic is high or low priority.

Try this demo for yourself:

1. Run "ping google.com" from another computer on your LAN.

2. Upload a 10-20MB file via Gmail or Dropbox from your computer.

3. Watch the ping times on the other computer skyrocket from around 100ms to upwards of 5-10 seconds.

4. Try a Google search from any other computer on your LAN while this is happening.

As an example, Apple's software update actually uses a variant of LEDBAT (the delay sensitive congestion avoidance algorithm from BitTorrent's protocol) when downloading software updates to avoid inducing bufferbloat in the downlink.