[Chrysalis]

in my view the modem side of the superhub is fine, I dont think its the cause of your issue. But I havent used it on the 50mbit service. A vmng300 would probably show lower latency/jitter tho but also along with bursts of bigger spikes when congestion gets too much as well as occasional bursts of packet loss. For speedtests I find the vmng300 made no difference but did affect things like web browsing speed and streaming performance.