Goyim :
bill001g :
Step 1.
Remove all the killer network garbage and install the killer driver that have all the killer features removed.
Your lan cables are not the problem when you are talking online games. Games use well under 1mbit/sec most under 500kbs. A cat5e cable will connect at 1gbit which is much faster than any game needs and likely is also many times faster than your internet connection.
Which one would be better at preventing interference?
Interference has nothing to do with the type of cable, only bandwidth. Interference has more to due with network infrastructure, local network traffic and congestion, and pings to the multiple different servers you'll be accessing.