Any easy way to see current speeds being used?

I have the mk63 mesh set, and know it has a "traffic monitor" feature to measure total bits sent per time period and stop after a set point has been reached.  I've been grateful while using Xfinity's internet with their max 1.2TB/mo unless you pay them extra...

 

But I don't see a way to use that area or anything else to see momentary aka live speeds.  Meaning how much usage is happening on my whole network, though WAN plug speeds are the worry.

 

I'm not the only one using my internet anymore, and I worry they're not as careful to not use all capacity as I am.  And I don't want to turn on QoS which will reserve part of my capacity at all times (losing part of what we pay for).

 

My internet connection is already faster down than my wifi can manage (600Mbps+ down at router vs. 300-350Mbps down max on speed test sites across wifi).  Up was 100-150 I think, which I'm sure we can saturate.  I've already looked for the least used channels.  And we're in a house so nothing else is right on top of our network (like in an apartment).

 

I'm not worried about intranet (local only) traffic.  It'll leave our network if it's overloading things.

 

Oh, we have Blink video cameras too.  5 running at 1080p when they record (highest they support).  Relatively recent addition.  It has a local sync module, but I think it might upload too.  Something about videos not being available initially unless you pay for their cloud service upgrade.

 

Easy way to see current transfer speeds at WAN and across network in general.