I'm really impressed with Airlink as well - been playing Moss and HL:Alyx on it and it's almost flawless. My previous attempts with Virtual Desktop were a bit flaky, but with the exception of some very minor blips (almost unnoticeable frame drops) it's been comparable to my Rift S connected to the same PC.
I suspect the setup is key here. I have a Virgin Hub3, a TP Link AX1500 router acting as a 5GHz access point which is on a wired connection to the Hub3. My PC is also wired connection. The TP Link Router is only a metre or two from my play space, so it's all about as good and as close as it could get. Oh, and the family don't connect to this 5GHz connection.