Slow speed on Fire TV 4k and PC
I've had an AT&T U-verse in my apartment for over three years, on the Internet 50 plan. I have four devices hardwired directly to my router:
Roku TV 4k
Fire TV 4k
My Windows 10 desktop
In my Roku TV settings, it says I have 50 Mbps, and I'm able to view all content fine there. However on my Fire TV 4k stick, I'm lucky to get 20 Mbps, and I can't view 4k content. I subscribe to an IP TV service called ilml.tv, which works on my Fire TV, and it buffers frequently. My desktop PC has the same issue. My Playstation is also slow, but it's less of a priority.
Any ideas why my Fire TV and PC are slow? I bought a new Ethernet cable and even switched router ports to no avail. I even tried a factory reset on the Fire TV and restarted the router.
As of 9/19/20...
- disabled IPv6 under Settings > LAN > IPv6
- changed Ethernet port config to 100BaseT/Full-Duplex
- Switched to Google DNS (184.108.40.206 and 220.127.116.11)
Any other suggestions?