Uploading GoPro Files Kills My Internet

I'm a bit confused with this one. When setting an upload off on my GoPro Hero 11, my internet dies. As in, completely dies. My other devices report Connected but no internet available . My desktop PC is connected and I can happily connect to my router while the upload is in progress but again no internet so it's definitely an internet issue, not WiFi. Interestingly, the upload fails every time after about an hour. My suspicion is that because the download is dead, it can't talk to the servers and fails. If I run a speed test on the router (TP Link Archer VR2800) it reports offline. If I cancel

Question by user1818822 on Super User, licensed CC BY-SA. We show a short excerpt and link to the original thread as credit.