Interesting, I'd like that to be the case so I've decided to try that. Updated driver with updated firmware that leads to a stable situation
stable owrt2102-r15934 today, as an "upgrade" from
stable owrt1907-r11285. That latter one was my first encounter with -ct stuff. I have since experienced lags on iOS devices and occasional dropouts on rMBP too. And just today and yesterday an unresponsive R7800. That motivated me to flash the latest and greatest
stable owrt2102-r15934 but also read up on the -ct stuff and iOS devices not being as "stable" compared to the old mainline driver.
I have mostly iOS devices, so after reading your comments I downloaded the most recent firmware from kvalo's repository and copied that to
/lib/firmware/ath10k/QCA9984/hw1.0/firmware-5.bin and rebooted. I'm going to try this combination to see how that rolls.
So far, your owrt2102-r15934 build is looking great @hnyman ; just a shoutout and a thank you for your work