My setup :
Roon Rock 1.7 (build 528) stable on Intel NUC NUC8i3BEH
Oppo UDP 205 with latest firmware on same switch. I was streaming via network to oppo and works fine. I found out that the 205 fully supports MQA via USB so i connected my oppo via usb to the ROCK.
It was recognized and decoding and rendering is enabled in device setup. If i play MQA files i hear music but pressing info button on oppo shows no MQA info. Only AUDIO USB IN : LPCM 44.1khz