Lost Upload speed

[bakedbeans]

Don't have a clue why this happened...Windows 11 Homemade wordstation.; Gigabyte X299X Designare 10G motherboard; i9 10980 cpu and 128 GB RAM.

I had to replace my C: OS drive and my primary storage drives because was running out of room. Used Macrium Reflect to clone my C: drive, then replaced both with Gen 4 M.2 NVMe drives. Would not boot up, because somehow in the cloning process my MBR got corrupted. Succeeded in fixing that via command prompt.

All seemed well until I connected to the internet. Spectrum 1 Gig symmetric connection has always given me 650 to 1050 Mbps upload and download speeds. Now, I still have the fast download, but my upload speed is only 10-16 Mbps via both Wifi 6 and by direct ethernet connections on this computer only! Three other computers in my home all run symmetrically as they should, so I know it's not my ISP, it is specific to this computer.

Updated Gigabyte LAN drivers, no change. Uninstalled and reinstalled ethernet ports, no change. Scoured the BIOS for any weird settings, no help there. Can find no reason for this. HELP!

 

[bakedbeans]

AI Google search fixed the problem. Did all of these things:
Potential causes and solutions

1. Network adapter advanced settings

• Check Duplex Mode: While you've reinstalled LAN drivers, it's worth reconfirming the network adapter's duplex setting. Sometimes, after driver reinstalls or system changes, this can default to half-duplex, significantly impacting upload speeds, particularly on Wi-Fi connections, according to a post on the Windows 11 Forum.
  • Open Device Manager (right-click Start button and choose "Device Manager").
  • Expand "Network adapters".
  • Right-click on your ethernet adapter and select "Properties".
  • Go to the "Advanced" tab and look for a setting related to "Speed & Duplex" or "Duplex Mode".
  • Ensure it's set to "Full Duplex" at the highest available speed (e.g., "1.0 Gbps Full Duplex").
• Disable Large Send Offload (LSO): Some users have reported improved performance after disabling Large Send Offload (LSO) in the network adapter's advanced settings, according to this Microsoft Q&A thread.
• Power Management: Ensure the option to "Allow the computer to turn off this device to save power" is unchecked for both your wired and wireless adapters, as suggested by posts on Microsoft Q&A and another Microsoft Q&A thread.