Me too. Exact same thing. Roon Core on very similar hardware except mine is Mac-mini on Big Sur. Streaming to Roon Ready certified endpoint Monoprice HTP-1. Losing my sanity. Never had this issue. Restarted core and endpoint, re-enabled endpoint, etc, etc, nothing makes a difference. Streaming Tidal will play fine for several tracks and then skip in the middle of a track to the next track for no apparent reason. Everything wired. SMB grade networking equipment on 1Gb business grade internet. All started after my Roon updated this morning to 1.8 build 783. Ahhhh!!! Please fix.