Not sure regarding the RAM usage - maybe Merlin can shed a bit of light on this?
Just make sure you are reporting any issues via the Feedback system and ensure that they are being sent, as sometimes is says complete, but the fine writing tells you that it has actually failed.
Still also getting 500+ entries in log file with the following. I also noticed they added a NAT option. You can select On or Off now. I wish it would allow for Secured or Open as the RT-AC5300 does.
Aug 17 21:15:06 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:15:07 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:16:35 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:18:27 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:18:27 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:18:28 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:18:28 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:18:28 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:18:28 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:18:28 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:18:28 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:18:29 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:18:29 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:18:29 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:18:29 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:18:29 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:18:29 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:18:29 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:18:29 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:18:29 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:18:29 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:18:29 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:18:29 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:18:30 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:18:30 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:18:30 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:18:30 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:18:30 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:18:30 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:18:30 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:18:30 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:18:30 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:18:30 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:18:30 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:18:31 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:21:43 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:21:43 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:25:10 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:26:02 watchdog: Hostname/IP mapping error! Restart ddns.
Aug 17 21:26:02 rc_service: watchdog 804:notify_rc start_ddns
Aug 17 21:26:02 start_ddns: update
WWW.NO-IP.COM noip, wan_unit 0
Aug 17 21:26:02 ddns update: ez-ipupdate: starting...
Aug 17 21:26:03 ddns update: connected to dynupdate.no-ip.com (8.23.224.120) on port 80.
Aug 17 21:26:03 ddns update: request successful
Aug 17 21:26:03 ddns update: asusddns_update: 0
Aug 17 21:26:03 ddns: ddns update ok
Aug 17 21:28:12 kernel: ERR[update_qos_data_by_ip:3436] Failed to find udb entry by skb dst-IP!
Aug 17 21:28:13 kernel: ERR[update_qos_data_by_ip:3436] Failed to find udb entry by skb dst-IP!
Aug 17 21:28:29 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:28:29 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:28:30 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:28:30 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:28:30 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:28:30 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:28:30 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:28:30 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:28:30 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:28:30 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:28:30 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:28:31 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:28:31 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:28:31 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:28:31 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:28:31 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:28:31 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:28:31 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:28:31 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:28:31 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:28:31 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:28:31 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:28:31 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:28:32 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:28:32 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:28:32 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:28:32 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:28:32 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:28:32 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:28:32 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:28:32 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:28:32 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:28:32 kernel: ERR[set_app_info_qos_meta:3361] It's a paid app, please assign a default bandwidth!
Aug 17 21:29:04 kernel