Steam's "Big Picture" will mean you won't be tied to a PC monitor to play Fusion

[Kyderra]

I believe you mean steam in-home remote streaming (Which is available outside of big picture mode)
I've played quite a few games over it and if your internet allows (Mostly your wifi) it work well.

That's from a i5 with a 1GB Vram card and a i7 with a 4GB Vram both streaming to a modern $250,- quad core - Acer Aspire Switch (A Tablet).
In both cases it works well if you are planning to casually play for a few hours.
However, do keep in mind that if you do get a lag spike over your wifi, your controls can cut out and crashing into a wall every so often is inevitable.

Inhome streaming can do many things well, but magically fix your LAN it can not.