I setup an Pi 3 (B+) for connecting to steam on my main computer. Steam Link is an application used for connecting remote devices (like the pi) as client with steam on the host computer (https://store.steampowered.com/steamlink/about/?l=english).
The name was also used for the hardware device from Valve which basically does the same. The main computer (called "Cronus") is connected via ethernet directly to the router. The Pi is connected via wifi (build-in wifi; 5G and no interferrers on the channels).
The Connection in Steam Link is basicly ok but periodically lagging; ~6sec slow connection/high ping every ~30sec.
If I connect the pi via ethernet everythign is fine....
The problem is: Since I dont want to place an 20m ethernet cable through 2 rooms and the corridor I need another solution.
I might try out an usb antenna soon.
Q: Is the problem the build-in wifi chip or is it an general network issue? And How can I get a stable connection without the usage of a direct ethernet cable?