Troubleshooting internet. You've done everything and confirmed it's an issue outside of your network and equipment.
Call...
"I've changed DNS, cables, secondary router, even the backup modem; issue persists.But things are fine if I use the mobile network, so I know everything after the modem is fine too. In the ping log I set up, I see poor latency issues sporadically every few seconds."
"We'll need you to go through the troubleshooting article."
- Restart router.
- Try another cable.
- Fuck, I dunno. Call support if it's still not working in like a week from now.