We have been having intermittent wireless connection problems with many of our R730 units. (Clients can't connect to the AP.) Only about two percent of our AP's are R730 units, but they account for most of our connection failures.
We were told that a firmware upgrade would fix the issue, so we upgraded from VSZ 5.1 to VSZ firmware 22.214.171.124.317 in May, 2021 (AP firmware 126.96.36.199.301), and this seemed to work for a while, but the connectivity issues returned and we began to notice them again on September 24th, 2021. (We have no change points associated with that date; we just started observing the failures then.)