My solution: I have a second, older (wifi 5 tho) router in access point mode plugged into my computer’s Ethernet port, and when my pc is on it forwards internet from its wifi connection to it. When I’m streaming to a device, it is the only device connected to that network. That also lets my computer have a wired connection to the router.

Additionally, I analyzed the network utilization near me to find which WiFi channels had the least congestion. Tbh tho, as long as the channel is different from your main router, you’d probably be fine.

I originally set it up for streaming wireless pcvr to my Quest 2, but I’ve found it works perfectly with Sunshine + Moonlight.