Thank you joeatx.
In the output of:
cd /sys/kernel/debug/ieee80211/phy0/ath10k && cat fw_stats
is no Station connected. So I can’t see, if higher bit rates would be visible there. If it is not too much effort would you mind posting the output again with a STA connected? Best would be a 11n / 11ac Station which is downloading a big file or with good throughput.
Really would appreciate.