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#21
Thanks all, I'll mark it as solved now.
"Better" is relative. Cat 6 is typically a higher grade of metal, and it's designed to have less crosstalk and interference, but that's like using Premium gas in your car that is designed to use Regular Unleaded. It doesn't really gain you anything if your equipment isn't designed to use it.
Cat-5e is sufficient since the WAN to LAN is not that high and majority of equipment that you will be connecting to it through Ethernet will only hit your capped speed when using the Internet. Across the switch you will be lucky to hit between 54-100 mbps burst.
I have the same Gateway but have a Cisco RV320 in DMZ behind it as an edge router. That is because I am using Wireless-ac to a NAS that has the capability of up to 1,000mbps.
You do not need Cat-6 in a home setup. Cat-5e will work fine for 10/100/1000. Even on the setup that I have, I have zero issues with my setup on that Gateway.
The OP is not getting Gig for their Internet. They have the 20mbps package with U-Verse. Most likely single pair.
I have Bonded pair and get up to 50mbps down, 6mbps up, even though I can hit 60 down and 20 up if they took the cap off of my cards. A lot of customers will never see Gig with ATT in anyone's lifetime, since there are too many customers that sit too far away from the DSLAM's and CO's.