That’s quite a low-res graph, so there could be narrow, ie short duration, spikes where it’s going up to some higher level. So the graph could be deceptive. I’m expecting that if you did a speed test, where clearly the connection will be maxed out in one or both directions, that it won’t even show up on such a graph.
If you’re doing live streaming then the speed will be decided upon by the server which sends at whatever rate it chooses, not at the full speed of your connection.
If you’re thinking about more speed, then clearly you do want it, so go for it.