i7 Kabylake Quad-Core processor, a 500GB Samsung 960 NVME M.2 DRIVE for Win10 OS and Roon, 16GB of 3000mhz DDR4 Ram, and my 55ktrack music collection resides on a Samsung 4TB 860 SSD.
Network Details (Including networking gear model/manufacturer and if on WiFi/Ethernet)
N/A (Connected via USB directly to Matrix Element X DAC, problem is with local DSD256 file playback only)
Audio Devices (Specify what device you’re using and its connection type - USB/HDMI/etc.)
USB–> Matrix Element X DAC
Description Of Issue
Everything works great except native playback of DSD256. My performance drops from 4x to .9x-1x when attempting to playback any DSD256 file locally from my 4TB SSD connected via SATA3 (550MB/s reads). The track plays until the performance drops to .9x for a few seconds where the track begins stuttering and eventually failing. I thought an i7 Quad-Core 3+ghz Kabylake would be more than enough to handle one single DSD256 local file playback? Nothing else is running in the background. I’m using the embedded Intel Graphics to power a 4K Samsung HDTV as my display.
It sounds like you are doing some DSP processing more than just playing a file. My i5 core doesn’t even show a X speed when just playing DSD256 native to a DSD capable endpoint. With another DAC, which requires DSD to PCM conversion and then downsampling to a DAC acceptable 24/176.4 , I am getting 5x.
As others have noted, a processing speed of 1x is not great, and the extra DSP operations are taxing your Core even further. If you try to output DSD256 content with no DSP active (even as a temporary test), does the same issue occur?