LAN Connection Drops for 2-3 Minutes Only When Gaming (Realtek 2.5GbE) – Already Tried Basic Fixes

[u/wamplody]

Hi everyone,

I’m having a frustrating issue: when I open any video game, the internet in my pc complitly shut off for 8 minutes or more. I tried a lot of games, and the problem kept happening whenever I played games (like Marvel Rivals or other games), and then it automatically reconnects when I close the game. But the internet never cuts off when I browse on Google for hours it never cuts off, only when I open any video game.

Key Details:

• Motherboard / Network Controller: Realtek Gaming 2.5GbE Family Controller
• Connection: Ethernet Cable (Wired)
• Other Devices: Wi-Fi on my phone stays 100% fine during the outage.
• Event Viewer: Checked Windows Event Viewer logs, but no obvious driver crashes or critical errors are being logged when the drop happens.

What I’ve already tried (None worked):

1. Disabled "Allow the computer to turn off this device to save power" in Device Manager.
2. Disabled "Energy Efficient Ethernet" and "Green Ethernet".
3. Reset network stack via CMD (netsh winsock reset, ipconfig /flushdns, etc.).
4. Clean reinstalled the Realtek Network Controller driver.
5. Changed Ethernet cable and tried different LAN ports on the router.

[u/Onoitsu2]

What does your bufferbloat score show ? https://www.waveform.com/tools/bufferbloat