Wr3cklessAnt1cs

I haven't disabled QoS. The only setting I have changed was enabling IPv6 with Auto Config, and no restoring from a backup. #EDIT: Disabled QoS and ran a speed test and received the attached results

And another

My connection uses DHCP, but the modem/router handles the configuration. I have no login to get connected.

Here is a screenshot fresh after a factory restore today. Same issue, no settings changed. I do use speedtest.net

The modem is an ES2251 from Spectrum. All devices in the home are connected, yes. When doing tests I make sure I disconnected all other devices to make sure something wasn't eating bandwidth.

I'm back!! Ended up putting the router away for a while and kept using my old one. I pulled it back out, and I have the same issues. I recently upgraded my internet to 1Gbps down, 40Mbps up. My old router can't handle gig speeds, so I'm using the XR500 now. When connected directly to the modem, I get my advertised speeds. When the router is plugged in, I top out at 500-600Mbps with QoS turned off. With QoS turned on, I get 300-400Mbps. Wifi devices are affected as well. All Ethernet cables are Cat 5e or 6. I called my ISP and they sent a tech, and confirmed I'm getting the correct speeds, so the issue lies with the router. It has been updated, and performed several factory restores to try to solve the issue. Any ideas??

No, it just happened randomly. When I first set it up, everything ran PERFECT.

Yes, I've tried all 4 ports. Same issue.

Wireless devices are getting full speeds, yes. I switched to WiFi on my desktop and all my connection issues disappeared. Yes I've tried several Ethernet cables, all Cat7. As for QoS, I disabled it from the Anti-Bufferbloat menu on the QoS menu page. **As a side note, when re-applying QoS it stays on the "Applying settings..." screen infinitely. I have to refresh the page to continue changing settings.

Hello I bought an XR500 router and after setup everything ran beautifully. About a week later, my internet speeds were cut in half. I pay for 300 down 20 up, I'm lucky to get 150 down and 5 up. I have tried just about everything. Turning off QoS, setting Anti Bufferbloat to never, setting bandwidth allocations. None of it works. When I connect directly to my modem, I get my full speeds. I never had this issue with my previous router, Nighthawk R6 (R8000) Notes: Ping via PingPlotter shows a heavily congested line. WiFi speeds work great. Any help or insight would be appreciated, else I'm going to have to return it and try a different model/brand.