Goldy.
you say that all is good with bb 2020.
thus i suggest that you do the following.
1. go into your bb2020 audio and midi driver settings.
and write down those settings.
2. NOW go into your bb 2021 audio and midi driver settings.
write down the settings once again.
DO YOU SEE ANY DISCREPENCIES BETWEEN THE TWO SETS OF SETTINGS ?

there are lots of musicians on these forums that are techs or ex retd techs ; thus between us all we should be able to figure the problem/solution out.
simon is always correct with all his good advice includeing TI chipsets are best for FW.

best
oldmuso


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.)