So much misinformation on how networking works.
TCP/IP packets are 100% digital, there is no place for noise, if there is any noise, it is not part of the packet.
In networks, you want as few hops as possible. A hop is going from one device to another. Generally, anything you remove from the source - destination is best. Streaming can happen without any faults on a 10mb network, anything over 100mb is just not required.
Next you want the shortest path you can get, unless you are running fiber, fiber doesn't care about distance as much.
On that note, fiber has 0 interference, unless you bend the fiber cable, never bend a fiber cable, but you can loop it.
Almost all cheap consumer switches are junk. There are a few good ones out there, but most are super cheap, crap.
Get a name brand made for commercial use. Yeah, a good power supply will help, but the switch quality is more important.
No idea on the filters, really have no idea how they work, or what they really do. Cables are important, pin out is important, get certified cables, it's what's being used to get the packets to you, so it's good enough for you.