Asus BD4 Port Forwarding slow

[lttd]

Hi! 

I run a server on my network and i'm trying to port forward the ports for Minecraft and web interface so that i can have remote access, but i've noticed every port i open is extremely slow. For Minecraft it takes ages to load in and is extremely laggy. For the web interface/dashboard its extremely slow. 

The server worked fine with my old setup , using the Asus ZenWifi BD4 in access point mode and my isp router as the router.

Eventually that had issues with DHCP so i switched the ISP router to be in bridge mode and only act as a fiber optic to rj45 modem. 

The WAN out of the isp router/modem is connected to the ethernet port one on the Asus ZenWifi BD4  while port 2 is connected to a dlink Go-Sw-5G ver. E1 5 port network switch which is then additionally connected to 3 other devices. 

Connecting to the minecraft server and web panel through local ip addresses from a different machine works perfectly fine and has no noticeable latency, but doing so via the WAN IP causes significant latency and issues with loading.

The server itself is not struggling as it has been running mc servers for almost a year with no problems, and ive rebooted it multiple times in the course of that period, including when i set up the new router. 

The ASUS ZenWiFi BD4 also does not seem to struggle as the cpu usage during connections seem to be under 50%, but ram at 400MB out of 512MB. 

I have been trying to figure it out for the past few days but not sure what causing it. Ive also had an issue where playit.gg dosent properly route to the internal IP if youre not on the LAN. Playit.gg is a proxy service which worked before with the isp router setup. 

The configuration is standard from quick internet setup wizard, only thing changed is port forwarding.

Ask me for more information and please help me. 

Under i have attached photos of my configuration. Running the newest firmware.

everything before half is normal CPU usage, everything after half is CPU usage when trying to connect to the server from WAN IP

[jzchen]

What was the issue with DHCP?  It is unclear why you made a switch based on this.  Is it the ISP DHCP or the router DHCP?

[lttd]

I originally had the Asus BD4 connected to my ISP router in AP mode, but i had issues with IP adresses getting assigned. For example the PC in my room had issues with getting an IPV4 address when it was connected via ethernet to one of the satellites. WiFi worked fine, but i would rather have the speed and reliability of ethernet rather than WiFi.

I would have to manually assign IP Addresses whenever it broke, ever since I've switched from using the ISP router to the BD4 I've never had to manually assign IP addresses.

Current setup is ISP router in bridge mode acting as a fiber modem, and the BD4 acting as the actual router. 

[Alex52]

If I see your problem correctly, you have client connection problems to the BD4 with IP assignment and slow WiFi speeds.

I believe your configurations have changed the BD4 default settings - causing your problems. Do a WPS factory reset on the BD4. Then, configure the SSID/s manually. DO NOT use any stored setup restoration file. Keep the operation mode in the default router mode.

Turning off the 5GHz Channel Control frees up resources and improves the stability and speed of the router by turning off DFS. Turning this off will cause no problems. Make sure the router authentication is set to WPA2/WPA3-Personal and WPA Encryption is AES. This should restore DHCP automatic client IP assignment by the router again and speed the BD4 WiFi back up.

Of course, this is moot if you wish to continue using the ISP router in bridge mode.

[lttd]

No, the WiFi speeds are normal, the IP assignment was broken, but i fixed it by switching the ISP router to bridge mode, meaning it functions as a fiber modem, and switching the BD4 from AP mode to Router mode.

The problem im having is the port forwarding being slow, meaning I cannot effectively access my home server from an external internet connection.

Accessing my home server on the local network works as expected with minimal latency and no issues. On the other hand onnecting via an external network to the server via port forwarding with the BD4 has a large amount of latency, enough latency and delay that the web admin panel barely loads and connecting to the minecraft server is impossible

WiFi has been consistent 500-800 mbps with ethernet from the satellites being a consistent 800-900 with low ping. 
DHCP IP address assignment has only been an issue for Ethernet connected devices when the BD4 was in AP mode.

edit: i would like to mention that the connection to the server worked perfectly normal when i was using the ISP router as the main router and port forwarding rather than the BD4.