Very slow up/slow download speeds if Hyper-V external switch enabled


cereberus

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Local time
2:31 AM
Posts
2,047
OS
Windows 10 Pro + others in VHDs
A long standing issue for many Hyper-V users is when you set up an external wifi switch in Hyper-V, it kills the download and/or upload speeds.

I have found a simple solution for Intel NICs. I have no idea how general this solution is.

 

My Computer

System One

  • OS
    Windows 10 Pro + others in VHDs
    Computer type
    Laptop
    Manufacturer/Model
    ASUS Vivobook 14
    CPU
    I7
    Motherboard
    Yep, Laptop has one.
    Memory
    16 GB
    Graphics Card(s)
    Integrated Intel Iris XE
    Sound Card
    Realtek built in
    Monitor(s) Displays
    N/A
    Screen Resolution
    1920x1080
    Hard Drives
    1 TB Optane NVME SSD, 1 TB NVME SSD
    PSU
    Yep, got one
    Case
    Yep, got one
    Cooling
    Stella Artois
    Keyboard
    Built in
    Mouse
    Bluetooth , wired
    Internet Speed
    72 Mb/s :-(
    Browser
    Edge mostly
    Antivirus
    Defender
    Other Info
    TPM 2.0

rypmag

Member
Local time
1:31 PM
Posts
1
Location
New Zealand
OS
Windows 11
OMG - you saved me so much time with this fix tonight. Couldn't figure out why my network performance on download had halved and upload had gone to less than 1Mb from 500Mb. Thank you! I had been building some Linux hosts that I wanted to run as VM's, they all worked great but the alas the host did not :).
 

My Computer

System One

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    DELL Optiplex
    CPU
    i7 - 10th Gen
    Motherboard
    DELL
    Memory
    64G
    Graphics Card(s)
    RTX3060
    Monitor(s) Displays
    2 x 4K 27" DELL
    Internet Speed
    1Gb/500Mb
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