And this log has captured the issue at hand?
Your logs do show something I normally don’t see (or I never noticed it)
06/27 15:02:51 Trace: [RAAT::HIFI DSD] [drift] update remote clock -401287765215us at local clock 30578018us error=-585us correction=0us neterror=-585us (-56 samples @ 96000hz)
06/27 15:02:53 Trace: [RAAT::HIFI DSD] [lua@0x7f580011c8] [192.168.1.98:44678] [roon] got clock sync response, offset= -401318343.44947 rtt= 0.695
06/27 15:02:53 Trace: [RAAT::HIFI DSD] [lua@0x7f580011c8] [192.168.1.98:44678] [roon] got clock sync response, offset= -401318343.34068 rtt= 0.412334
06/27 15:02:53 Trace: [RAAT::HIFI DSD] [lua@0x7f580011c8] [192.168.1.98:44678] [roon] got clock sync response, offset= -401318343.32349 rtt= 0.418778
06/27 15:02:53 Trace: [RAAT::HIFI DSD] [lua@0x7f580011c8] [192.168.1.98:44678] [roon] got clock sync response, offset= -401318343.5302 rtt= 0.757611
06/27 15:02:53 Trace: [RAAT::HIFI DSD] [lua@0x7f580011c8] [192.168.1.98:44678] [roon] got clock sync response, offset= -401318343.40419 rtt= 0.484223
06/27 15:02:53 Trace: [RAAT::HIFI DSD] [lua@0x7f580011c8] [192.168.1.98:44678] [roon] synced to master clock. offset=-401318343.34068 nominal remote time 401350934540845 rtt 0.412334
06/27 15:02:53 Trace: [RAAT::HIFI DSD] [drift] update remote clock -401285752120us at local clock 32591220us error=-691us correction=0us neterror=-691us (-66 samples @ 96000hz)
06/27 15:02:55 Trace: [RAAT::HIFI DSD] [lua@0x7f580011c8] [192.168.1.98:44678] [roon] got clock sync response, offset= -401318343.50445 rtt= 0.659
06/27 15:02:55 Trace: [RAAT::HIFI DSD] [lua@0x7f580011c8] [192.168.1.98:44678] [roon] got clock sync response, offset= -401318343.44447 rtt= 0.48763
06/27 15:02:55 Trace: [RAAT::HIFI DSD] [lua@0x7f580011c8] [192.168.1.98:44678] [roon] got clock sync response, offset= -401318343.43239 rtt= 0.469963
06/27 15:02:55 Trace: [RAAT::HIFI DSD] [lua@0x7f580011c8] [192.168.1.98:44678] [roon] got clock sync response, offset= -401318343.51786 rtt= 0.601481
06/27 15:02:55 Trace: [RAAT::HIFI DSD] [lua@0x7f580011c8] [192.168.1.98:44678] [roon] got clock sync response, offset= -401318343.47846 rtt= 0.615408
06/27 15:02:55 Trace: [RAAT::HIFI DSD] [lua@0x7f580011c8] [192.168.1.98:44678] [roon] synced to master clock. offset=-401318343.43239 nominal remote time 401352952642744 rtt 0.469963
06/27 15:02:55 Trace: [RAAT::HIFI DSD] [drift] update remote clock -401283734202us at local clock 34609229us error=-783us correction=0us neterror=-783us (-75 samples @ 96000hz)
06/27 15:02:57 Trace: [RAAT::HIFI DSD] [lua@0x7f580011c8] [192.168.1.98:44678] [roon] got clock sync response, offset= -401318343.51662 rtt= 0.576629
06/27 15:02:57 Trace: [RAAT::HIFI DSD] [lua@0x7f580011c8] [192.168.1.98:44678] [roon] got clock sync response, offset= -401318343.50295 rtt= 0.523666
06/27 15:02:57 Trace: [RAAT::HIFI DSD] [lua@0x7f580011c8] [192.168.1.98:44678] [roon] got clock sync response, offset= -401318343.47191 rtt= 0.396519
06/27 15:02:57 Trace: [RAAT::HIFI DSD] [lua@0x7f580011c8] [192.168.1.98:44678] [roon] got clock sync response, offset= -401318343.54074 rtt= 0.520574
06/27 15:02:57 Trace: [RAAT::HIFI DSD] [lua@0x7f580011c8] [192.168.1.98:44678] [roon] got clock sync response, offset= -401318343.4964 rtt= 0.497092
06/27 15:02:57 Trace: [RAAT::HIFI DSD] [lua@0x7f580011c8] [192.168.1.98:44678] [roon] synced to master clock. offset=-401318343.47191 nominal remote time 401355001176742 rtt 0.396519
06/27 15:02:57 Trace: [RAAT::HIFI DSD] [drift] update remote clock -401281685747us at local clock 36657724us error=-823us correction=0us neterror=-823us (-79 samples @ 96000hz)
Maybe you should contact Support about this.
Thanks