Assuming 19.07 is using ath10k-ct driver and firmware, you should see this response (and the link he provides in it) by the ct dev to increase the number of stations beyond 32.
HTH
Assuming 19.07 is using ath10k-ct driver and firmware, you should see this response (and the link he provides in it) by the ct dev to increase the number of stations beyond 32.
HTH