What steps should I take if I suspect my home router's firewall or QoS settings are interfering with Destiny 2 on PS5, causing CAT errors without an update?

If you suspect your router's firewall or Quality of Service (QoS) settings are causing CAT errors, access your router's administration page (usually via a web browser using its IP address, e.g., 192.168.1.1). First, try temporarily disabling your router's firewall for a few minutes to see if the error resolves (re-enable it immediately afterward for security). Check your QoS settings and ensure Destiny 2 or your PS5 isn't being deprioritized. Verify that UPnP (Universal Plug and Play) is enabled, as it helps games dynamically open necessary ports. If issues persist, consider manually setting up port forwarding for Destiny 2's recommended ports for PSN.