Comcast Modem 86 mbps but router is 5 mbps

[Max_Styker]

So the modem/router combo giving to us from comcast is 86 mbps but when i plug a router into it its only 5 mbps.
Ive tried multiple cables
Is it being limited
Bridge mode is off
We have 3 routers that are usually plugged into the modem

 

[kanewolf]

Is this a wired or wireless connection to the router in question?