You can have a try on below setting:
2. turn off roam
3. wwd_wifi_set_scan_suppress , disabled.
4. if possible, please help to capture one sniffer log in your area.
Using wwd_wifi_set_up/down solved this issue, Thanks.
Also if the channel needs to be changed during monitor mode wwd_wifi_set_down/up should surround the call to wwd_wifi_set_channel.