Can you please confirm that you are using the newest firmware on your Oppo 205? Please make sure that your USB DAC Firmware is up to date and the drivers for it are up to date as well.
Both are listed on this page here:
The Oppo 205 is a MQA full decoder but MQA USB HID is not supported when using ASIO mode, so you won’t see this information in the signal path but you will on the Oppo’s side when using full decoder mode. Further, if you are making use of the WASAPI drivers then the output limit is 192kHz.
I would set the Oppo 205 to Decoder & Renderer as mentioned by John in this thread: