I may be missing something here, but... I've just bought a 4K OLED "Smart" TV, however I can't stream anything in 4k. I have the network speed to support it, but the wifi is too unstable (but fast enough) and the ethernet is too slow. Analiti shows that on Wifi I get about 160mbps and on Ethernet only about 20 (it's a gigabit switch with cat6 cable)

Does anyone know why this is so bad or if there's a workaround?