I am not sure but I think you may have altered the settings in your computer's own sound electronics as opposed to the Explorer2. Perhaps this has resolved some sort of conflict, but have you looked at the status and other information that Meridian's own USB Control app (for windows) provides? Amongst other things this allows you to adjust the buffering affecting the Explorer which could certainly affect your problem.

Cinema/Music: Trinnov Altitude32 8-16,218,Cloud 4 channel, Marantz UD5007,DSP5200SE(2+C),DSP3300(4),DSW(2),271,MShort Ceilings,AppleTV 4K
TV: Marantz SR7013 Wharfedale Diamond 9x4+Celestion(C)
Music: Roon,i7NUC8gen,QNAP TS253A, Sony Scala, MS200, Garrard DDQ650,Wharfedale Diamond 12.3
Kitchen: AD88 (bluetooth via i80).