Gordon .
its difficult to ascertain. i suspect an mme prob driver.
sounds like its a metronome anomoly.
maybe turn off ?
i use my own clik trak in bb. as i said before.

it might be mme driver which introduces latency of course.

try this test in bb change driver from mme to win WAS
driver in prefs...still same prob ?

in rband/no probs what driver was used ? WAS ? or asio ?

best
om


my songs....mixed for good earbuds...(fyi..my vocs on all songs..)
https://soundcloud.com/alfsongs
(90 songs created useing bb/rb)
(lots of tips of mine in pg tips forum.)