I have no idea what the JRMark tests but I ran my computer, my MS-3 and my MS-2 and got the following results:
PC, 2,134
MS-2, 512
MS-3, 525
The other thread indicated you are using (unless I misunderstood something which is possible ) the USB input of the Oppo BDP-105 DAC. Per the manual (which I posted in the other thread):
"The BDP-105 supports up to 2ch/192kHz PCM signal through its USB audio input, and up to
2ch/96kHz PCM, Dolby Digital, DTS and AAC signal through its Optical and Coaxial audio inputs."
So the BDP 105 can't handle DSD via its USB DAC input. JRiver allows one to convert DSD to PCM. One must go to 'Tools,' 'Options,' 'Audio' and then 'DSP and Output Format' and adjust the sample rate for in excess of 192kHz to 176kHz and it will play the DSD as PCM.