@Suiseiseki @lucy @snacks @Paradox perfect conditions aren’t required for 1.2 gbit/s in my experience. i get that reliably at home, with multiple devices and over 2 floors.
that’s fine enough for mobile stuff i’d say
fwiw ethernet interference is also fairly common in average homes. you get fridge compressors and ground loops. the latter was bad enough at my place i had to get a tenda switch with proper ground to reliably negotiate 1gbps full-duplex and stop one of my machines from crashing/rebooting randomly