need to set up a DMZ for my gaming pc on my orbi rbk752, how do i do that?

You need to assign your PC's local IP address as the default DMZ server in the router settings. This forwards all unsolicited inbound traffic to that PC.

FIX:

1. First, note your gaming PC's local IP address (e.g., 192.168.1.25).
2. Launch a browser on a device connected to your Orbi, go to orbilogin.com, and log in as admin.
3. Navigate to ADVANCED > Setup > WAN Setup.
4. Select the Default DMZ Server checkbox.
5. Type your PC's IP address in the field.
6. Click the Apply button.

IF THAT DIDN'T WORK: Ensure your PC has a reserved IP address so it doesn't change. Go to ADVANCED > Setup > LAN Setup and use the "Address Reservation" section to bind your PC's MAC address to the IP you used for the DMZ.

HEADS UP: A DMZ server poses a significant security risk. The designated computer loses most firewall protection and is exposed to exploits from the Internet. Only use this for incompatible applications, and understand the risk. If compromised, that PC can be used to attack others on your network.