New router?

[Spookshow]

I will be the first to tell you I am 100% not a networking guy. With that said at home currently I have a tp-link tl-wdr3600

Which has been a decent router. But it now feels like perhaps we are over taxing it or something. Connected devices are 2 pc's (both over ethernet) 2 laptops (both have wireless ac now) 2 oneplus 3t (also with wireless ac) and a NAS/Netflix streaming machine(ethernet) . My question is basically are we over taxing the router? Do I need a new one? Would going with a wireless ac router help now that all wireless devices are ac?

It's not the internet that feels slow (100Mbps)its the actual network traffic. Either steam in home streaming, file sharing, or accessible NAS just makes everything slow. Sometimes just a simple reboot of the router helps for a bit. 

Any suggestions? Or other info I can give back. 

[CrazyTasty]

If rebooting the router fixes the problem temporarily, then yes, the router is the problem.

 

The TP-Link Archer C7 would be good for your size network. Or you could try a cheap switch to take some of the switching load off the router. Or you could get a dedicated router and use the WDR3600 as an AP.

[Blebekblebek]

Flash it using gargoyle

https://www.gargoyle-router.com/download.php

 

I've used it for my old MR3420, it fix my problem which is freezing randomly.

 

You can always back to stock firmware

http://www.friedzombie.com/tplink-stripped-firmware/