JRiver 18 [I am registered user] on clean install Windows 7 on dedicated music server computer connected to Mytek 192 DSD via USB 2.0.
WASAPI- event style mode, BitStreaming DSD over PCM, [PCM files send as 24bit]
I hear click/pop when changing tracks or EVEN when playing one album GAPLESS mode, it is probably on all SACDs/CDs but on most albums the clicks are almost not noticeable on some they are extreme:
Examples: Sara Brightman La Luna between track 1 and 2, Gianna Nanini - Pearle all tracks, Pink Floyd SACD between track 3 and 4, also the same click/pop on CD between track 3 and 4. [= but I could not hear click/pop between track 1 and 2, 2 and 3...]. SACDs are being played directly from iso files, CDs are being played from flac files.
Play from Memory, Off/On does not effect it,
Regarding Buffers: Lowering Buffer to Minimum Hardware -> no sound output/[but no error either], Buffer set to 10ms super many clicks/pops - even during the playback. Actually even with recommended setting I think I an hear pop/crack sometimes during playback [in the middle of tracks but rarely... but I cannot really confirm that 100% - with buffer 10ms it is super obvious].
I think it is gotta be something wrong on JRiver side? Something with buffers? I can provide the files for comparison but the fact that it does it with both SACDs and CDs makes me suspicious... and the fact that it does the same way on PF - DSODM - either SACD or CD is something to think about...
I have experimented with turning off all USB devices [I have only two: Flirc, USB Keyboard/Mouse - they are on different USB Hub], turning off all USB 3.0, PCI-e, no effect. Same pops/clicks from speakers and headphones directly connected to DAC.