I stream straight from my Lenovo P73 (on board WiFi hotspot) to my Quest 2. I have an Quadro 5000 and the quality is ok for design review and quick in-and-outs. I don't think I would put a client into it yet. I use Virtual Desktop as I think this still the better solution over Airlink.
Looking at streaming games from my personal game PC with an RTX2080Ti and a dedicated router I think that quality and lag free presentation for a client should be possible though.
What the exact framerate is I can't tell you, but from what is possible with the right hardware should reach 120Hz....... which is probably overkill for a presentation