Hi Peter,
I think to notice after the 10.15 update of player app IOS of 21Jan25 that the volume setting has an increased delay.
Some background on how this was found:
Open the app, hit play button, immediately go to volume bar, and move it to the desired volume.
Result 1: Volume does not go to the set value of the volume slider (not desired at all)
Result 2: if you quickly move up down the volume slider the player does not immediately respond (anymore)
Result 3: All works but assumed 0.5 to 1 second delay in response when Leedh Processing. Estimated 0.2-0.5 second delay without Leedh processing