WLED WiFi bandwith

I wouldn't be too fussed about the actual bandwith as surely its all local traffic? more making sure the router and ESP board supports the same protocol like B,G N etc and it gets a good signal in its final location.

Cant give you exact figures but heres my pi Ethernet adapter for the last 2 hours (pi runs hyperion & Libreelec 24/7 and uses Ethernet then router Wi-Fi to D1 Mini)

LEDs with USB capture @720p are active until just before 23:50 then LEDS with platform capture have been on since 23:50 @1080p then @720p from 01:00 ish, you can see the episode changes where it drops, LEDS were turned off just after 1:15am where you can see the larger spike on the graph, so comparing that to the previous 15 mins or so on that episode, there's not much use at all - esp as the majority of that bandwidth is the actual episode going to media centre.