I have a TP-LINK AX3000 router that I'm using with Spectrum's 1Gbps fiber connection. When using Wifi (and only wifi; ethernet works fine) certain media and phone apps will not load or only partially function. For example, YouTube works fine, but Twitter will load comments and their text content but will not load images or videos, my ARLO security camera app will load but I can't view my camera live stream or videos saved to the cloud, and my calorie counting app (macrofactor) won't load at all and hangs at the initial loading screen.

Turning off the WiFi and using my phone's data will immediately resolve the problem. After staying off the Wifi for a brief period or restarting the router, the problem is fixed temporarily but starts happening again not long after. If I enable a VPN on any device having these issues, the issues immediately go away.