Intermittent Packet Loss on Wired Connection + x2 Gbps Plan Only Reaching ~530 Mbps

Hello,

I'm hoping someone can help me investigate an ongoing issue with my Xfinity internet connection.

I have an XB8 gateway and subscribe to the 2 Gbps internet plan. Since moving to my current address, I've only received around 500–530 Mbps download speeds on a wired connection, even though my gaming PC is connected at 2.5 Gbps.

Over the past two days I've also started experiencing intermittent packet loss, which is causing lag spikes in online games.

Troubleshooting already completed:

• Gaming PC connected directly to the XB8 (no switch in between)
• Replaced Ethernet cable
• Tested a different Ethernet adapter
• Verified a 2.5 Gbps Ethernet link
• Rebooted and factory reset the XB8 gateway
• Checked the coax connection

Network testing:

• 500 pings to my gateway (10.0.0.1):
  • 0% packet loss
• 500+ pings to 1.1.1.1:
  • Consistent packet loss (approximately 0.6–0.8%)
• PingPlotter also shows packet loss occurring after traffic leaves my gateway, not on my local network.

Because my local network tests clean, I believe the issue may be related to the connection beyond the gateway.

Could someone please review my account and check:

• Modem provisioning
• Downstream and upstream signal levels
• Signal-to-noise ratio (SNR)
• Correctable and uncorrectable codeword errors
• Any node or plant issues affecting my area

I previously had a technician visit for the speed issue, but it was unfortunately not resolved. Before scheduling another visit, I'd appreciate having the line and modem diagnostics reviewed.

Thank you.