AT&T Fiber speeds are fine on phones/computers but terrible on all TVs — any ideas?
We’ve been experiencing buffering issues on multiple TVs in our home for the past four weeks. Before that, everything worked perfectly and nothing changed in our setup before the problems started.
We have AT&T Fiber. Over the last month, AT&T has replaced the gateway and sent technicians out twice. During the most recent visit, the tech replaced the lines and connections coming into the house and confirmed the internet speed at the gateway was exactly where it should be.
When I run speed tests through the Smart Home app or on our computers/phones, the speeds look great. However, when I run speed tests on our TVs, the download speeds are extremely poor (example: 0.43 Mbps).
All three TVs are hardwired through a network switch. To rule out the switch/cabling, I unplugged the Ethernet cable from the TV closest to the router and tested directly, but the speeds were still terrible.
The strange part is that our phones and computers work fine, while all three TVs (different brands, models, and ages) are struggling.
Any ideas on what could cause only the TVs to have such poor speeds while everything else on the network seems normal?