#1 Maybe, but we don't know what your streaming quality is with wifi.
#2 You don't need to do anything with the router. You need to find your network settings on your computer and set it to use the ethernet connection instead of the wireless.
discipuli nostrum bardissimi sunt.
- Assuming based on evidence is not the same as knowing.
- If you want to argue with me at least use some actual facts instead of making it up.