This Article Applied to 

TX401_V1/V2

Backgroud Information

TX401 is a 10 Gigabit PCI Express Network Adapter. Occasionally, users noticed when startup or restart or wakeup from sleep, the PC couldn't get the full download speed. The upload speed, however, remains consistently high. Disabling/enabling it each time is able to get the full download speed. For example, the overall internet bandwidth is 3.2Gbps, and there is only 1.7Gb via speedtest after PC startup. 

Recommended Suggestions:

• Make sure the drive is up-to-date-Marvell AQtion Windows 64-bit Driver Version 3.1.10.
• Please go to the Device Manager, then find the TX401 under "Network Adapters", select "Properties" and go to the"Advanced" tab. Disable "Recv Segment Coalescing(IPv4)" and "Large Send Offload(IPv4)".
• Adjust the “Jumbo Packet” to “4088 bytes” / “9014 bytes” / “16348 bytes” for a try.