Yes we were playing a game at the time his latency spiked which made it rather difficult for him
Werid thing is the Skype didn't seem to mind as we'd left a skype session open for the voice comms (Keep meaning to setup mumble again, but tbh when there's only a few of you Skype actually works pretty well)
The main reason for monitoring his router was he thought someone in his family might have been downloading/uploading causing the high latency so we setup SNMP polling to check, I thought he'd setup a f8lure graph then but it seems not so I created one today however because of that it doesn't have much data to compare normal to peak.