I'd be a little weary of such connections. Most relay systems such as Dark noted, will still place an inherent latency just do due to fact their relays. doesn't matter the form factor.
Think of it as a long distance baton relay race, Each guy has to pass the baton his carrying to the next guy... now the first guy has to pass his baton to the next, but the next guy also has to pass the one he's carrying back; on down the line. Get it. Shorted distance with having to pass data back thru multiple relays is usually best.
Here's the skinny on any issues you can encounter even with hardwired lines.
1. EMI/EMF interference... bad one here - can be caused by even having any part of your system on anything like a microwave or similar device in the same room, or even an electrical circuit.
2. degraded cables.. even on inbound lines that others provided.
The lists go on and on.
In other words some times spending $150 to run a hardwired connection to where you wanted and adding a $50 router may work out better.
I can see your place so... I can only say I hope this helps.
Worid
U.S.Navy - ET IRev.