one of my first gigs was troubleshooting an application failure over a low bandwidth dedicated link - everything worked fine until the traffic volume resulted in scheduling jitter due to buffer latency; the resulting added overhead of continual connection renegotiation operations killed what was rest of the link the link and caused the failure to propagate into the application itself..

thankfully this oversight led to me as an intern needing to perform the experiment to 'prove' the point, and a subsequent job offer.. so at least there was that :)