not bad via the laptop with other devices streaming / facebooking etc doubt the servers can dish out over 100Mbps, closest I get at work is in the 80-90Mbps range and we have a 100Mb burstable to 1Gb fibre line.
My company is a provider on Speedtest and the minimum requirement is only a 100Mb connection

The bandwidth costs alone just for participating are massive. It consumes around 400GB of bandwidth per week, and 95th %ile billing goes out the window with speedtests due to the very nature. You end up paying for 100Mb/100Mb (~£600 per month) just for threads like this

There isn't a chance we'd put it on a 1Gb bearer ...