Best performance is still wired and it’s cheap;
No need fancy cat8 or anything.
My 4yr old Netgear is still going strong;
I only use wifi for simple browsing and light streaming;
All dedicated streamers are on wired - no drops or stuttering.
But STILL convenience of wifi cannot be overstated especially for mobility devices 
Wifi to a large extent is affected by the physical layout just like speaker placement - hahaha 