Hi,
I think the logging monitor would be not that impacting on the ASA device and on the other features on the ASA device.
On the Other hand , logging console is impacting on the logging function and is only recommended when troubleshooting on the ASA device.
Otherwise it is recommended to be turned off.
These would only be harmful if they are set to a high severity level and too many logs are being generated.
Thanks and Regards,
Vibhor Amrodia