WNDR3800 only getting 300Mbps with hard wired connection.

Hello Netgear Community!

Hope everyone is doing well. So a buddy of mine was getting rid of some things he didn't need anymore and I snagged the Netgear N600 Wireless Dual Band Gigabit Router -Premium Edition (Model :WNDR3800), that was in the stuff he was getting rid of. 

I've recently found myself heavily interested in learning about all the vast amount of components, protocols, security features, wireless/wired, and everything really that goes into the internet. Needless to say I have continually been surprised on the all the different inner workings and background operations that really are go into the internet and how websites and our computers interact and communicate. Its super impressive and i've been having a blast learning about it all. 

Anyways, so I hooked up the N600 router and went through the set up and all that, which everything seems to working how it should and was super straight forward for setup. I have it my computer connected to it via ethernet and tested the connection speed (I use the desktop app Speedtest by Ookla)and I am  consistantly only getting 300-345Mbps for the speed.

I know from the specs of this router it says that wireless speeds cap at 300Mbps but I didn;t see any specs that mentioned wired speed specs.

Are routers max throughput speeds for wireless and wired connections the same? I was under the impression that wired connections were faster. Are wired connections only faster due to there being less interference in the connection or something along those lines?

My usual setup I use a Unifi ac ap pro between my computer and the modem and I consistently get 900-960Mbps with my wired connection and around 850Mbps on my phone through the wifi.

So i guess i'm more or less wondering is 300Mbps really the max throughput ethernet wired speed that the netgear N600 can put out or is there a way to bump that speed up? I would love to find a way to be able to use it so I can also hardwire my other pc and laptop at the same time. The unifi ac ap pro only has a single ethernet output port vs the N600s 4 ports.

Also, is there maybe some type of way to wire the unifi ac ap pro and the n600 in line with eachother that would allow me to utilize the speed of the unifi and also utilize the output ports of the N600?

any information and help would be greatly appreciated! As i said previously I'm still learning about all this sort of stuff so the more information and knowledge I am all for it.

Thanks for your time in advance! cheers

oh and if any other information from my end is needed that i didnt include I will happily provide.