checking the notes for my prior router update, for airplay stability the CTS/RTS setting was dropped down to 2346. I've updates ORBI to reflect the same change and tesitng now.
When I saw your posts, I went and checked my RTS/CTS setting and it seems to be by default at the top end of the adjustment range: 2347. Was yours at 2347 by default as well?
And changing it by one digit lower, it has made a positive difference in data streams being interrupted?